Listed Animals
850 Records
Parameters:
- Group Type: Vertebrates
- Listing Statuses: Endangered
When searching by State,
please note that a species will show up in the report only if it has a spatial current range.
State associations for a species are based on a spatial current range delineated by
FWS biologists in TESS (and not all species have spatial current range delineated at
the present time).
The current range of species entities consisting of one or more populations does not include states or countries outside those population boundaries, even though the species may occur there in a population not covered by the Endangered Species Act.
The current range of species entities consisting of one or more populations does not include states or countries outside those population boundaries, even though the species may occur there in a population not covered by the Endangered Species Act.
| Scientific Name | Common Name | Species Group | Federal Listing Status | Where Listed |
|---|---|---|---|---|
| Acanthorutilus handlirschi | Cicek (minnow) | Fishes | Endangered | Wherever found |
| Accipiter fasciatus natalis | Christmas Island goshawk | Birds | Endangered | Wherever found |
| Accipiter francesii pusillus | Anjouan Island sparrowhawk | Birds | Endangered | Wherever found |
| Accipiter striatus venator | Puerto Rican sharp-shinned hawk | Birds | Endangered | Wherever found |
| Acinonyx jubatus | Cheetah | Mammals | Endangered | Wherever found |
| Acipenser brevirostrum | Shortnose sturgeon | Fishes | Endangered | Wherever found |
| Acipenser dabryanus | Yangtze Sturgeon | Fishes | Endangered | Wherever found |
| Acipenser mikadoi | Sakhalin sturgeon | Fishes | Endangered | Wherever found |
| Acipenser naccarii | Adriatic sturgeon | Fishes | Endangered | Wherever found |
| Acipenser oxyrinchus oxyrinchus | Atlantic sturgeon | Fishes | Endangered | Carolina DPS - See 50 CFR 224.101 |
| Acipenser oxyrinchus oxyrinchus | Atlantic sturgeon | Fishes | Endangered | Chesapeake Bay DPS - See 50 CFR 224.101 |
| Acipenser oxyrinchus oxyrinchus | Atlantic sturgeon | Fishes | Endangered | New York Bight DPS - See 50 CFR 224.101 |
| Acipenser oxyrinchus oxyrinchus | Atlantic sturgeon | Fishes | Endangered | South Atlantic DPS - See 50 CFR 224.101 |
| Acipenser sinensis | Chinese sturgeon | Fishes | Endangered | Wherever found |
| Acipenser sturio | European sturgeon | Fishes | Endangered | Wherever found |
| Acipenser transmontanus | White sturgeon | Fishes | Endangered | U.S.A. (ID, MT), Canada (B.C.), (Kootenai R. system) |
| Acrocephalus familiaris kingi | Nihoa millerbird (old world warbler) | Birds | Endangered | Wherever found |
| Acrocephalus luscinia | Nightingale reed warbler (old world warbler) | Birds | Endangered | Wherever found |
| Acrocephalus percernis aquilonis | Eiao Marquesas reed-Warbler | Birds | Endangered | Wherever found |
| Addax nasomaculatus | Addax | Mammals | Endangered | Wherever found |
| Aepyceros melampus petersi | Black-faced impala | Mammals | Endangered | Wherever found |
| Aerodramus bartschi | Mariana swiftlet | Birds | Endangered | Wherever found |
| Agelaius xanthomus | Yellow-shouldered blackbird | Birds | Endangered | Wherever found |
| Ailuropoda melanoleuca | Giant panda | Mammals | Endangered | Wherever found |
| Aipysurus fuscus | Dusky sea snake | Reptiles | Endangered | Entire |
| Alauda razae | Raso lark | Birds | Endangered | Wherever found |
| Alcelaphus buselaphus swaynei | Swayne's hartebeest | Mammals | Endangered | Wherever found |
| Alcelaphus buselaphus tora | Tora hartebeest | Mammals | Endangered | Wherever found |
| Alethe choloensis | Thyolo alethe | Birds | Endangered | Wherever found |
| Alligator sinensis | Chinese alligator | Reptiles | Endangered | Wherever found |
| Alouatta palliata | Mantled howler monkey | Mammals | Endangered | Wherever found |
| Amazilia luciae | Honduran emerald hummingbird | Birds | Endangered | Wherever found |
| Amazona arausiaca | Red-necked parrot | Birds | Endangered | Wherever found |
| Amazona brasiliensis | Red-tailed parrot | Birds | Endangered | Wherever found |
| Amazona guildingii | St Vincent parrot | Birds | Endangered | Wherever found |
| Amazona imperialis | Imperial parrot | Birds | Endangered | Wherever found |
| Amazona leucocephala | Bahaman or Cuban parrot | Birds | Endangered | Wherever found |
| Amazona pretrei pretrei | Red-spectacled parrot | Birds | Endangered | Wherever found |
| Amazona rhodocorytha | Red-browed parrot | Birds | Endangered | Wherever found |
| Amazona versicolor | St. Lucia parrot | Birds | Endangered | Wherever found |
| Amazona vinacea | Vinaceous-breasted parrot | Birds | Endangered | Wherever found |
| Amazona vittata | Puerto Rican parrot | Birds | Endangered | Wherever found |
| Ambystoma bishopi | Reticulated flatwoods salamander | Amphibians | Endangered | Wherever found |
| Ambystoma californiense | California tiger Salamander | Amphibians | Endangered | U.S.A. (CA - Santa Barbara County) |
| Ambystoma californiense | California tiger Salamander | Amphibians | Endangered | U.S.A. (CA - Sonoma County) |
| Ambystoma macrodactylum croceum | Santa Cruz long-toed salamander | Amphibians | Endangered | Wherever found |
| Ambystoma mavortium stebbinsi | Sonoran tiger salamander | Amphibians | Endangered | Wherever found |
| Ameiva polops | St. Croix ground lizard | Reptiles | Endangered | Wherever found |
| Ammodorcas clarkei | Clark's gazelle | Mammals | Endangered | Wherever found |
| Ammodramus savannarum floridanus | Florida grasshopper sparrow | Birds | Endangered | Wherever found |
| Ammospiza maritima mirabilis | Cape Sable seaside sparrow | Birds | Endangered | Wherever found |
| Amytornis goyderi | Eyrean grasswren (flycatcher) | Birds | Endangered | Wherever found |
| Anairetes alpinus | Ash-breasted tit-tyrant | Birds | Endangered | Wherever found |
| Anas aucklandica nesiotis | Campbell Island flightless teal | Birds | Endangered | Wherever found |
| Anas laysanensis | Laysan duck | Birds | Endangered | Wherever found |
| Anas wyvilliana | Hawaiian duck | Birds | Endangered | Wherever found |
| Anaxyrus baxteri | Wyoming Toad | Amphibians | Endangered | Wherever found |
| Anaxyrus californicus | Arroyo (=arroyo southwestern) toad | Amphibians | Endangered | Wherever found |
| Anaxyrus williamsi | Dixie Valley Toad | Amphibians | Endangered | Entire |
| Andrias davidianus (=davidianus d.) | Chinese giant salamander | Amphibians | Endangered | Wherever found |
| Andrias japonicus (=davidianus j.) | Japanese giant salamander | Amphibians | Endangered | Wherever found |
| Anodorhynchus glaucus | Glaucous macaw | Birds | Endangered | Wherever found |
| Anodorhynchus leari | Indigo macaw | Birds | Endangered | Wherever found |
| Anolis roosevelti | Culebra Island giant anole | Reptiles | Endangered | Wherever found |
| Anoxypristis cuspidata | Narrow sawfish | Fishes | Endangered | Wherever found |
| Antechinomys laniger | Eastern jerboa marsupial | Mammals | Endangered | Wherever found |
| Antechinus apicalis | Dibbler | Mammals | Endangered | Wherever found |
| Antigone canadensis pulla | Mississippi sandhill crane | Birds | Endangered | Wherever found |
| Antilocapra americana peninsularis | Peninsular pronghorn | Mammals | Endangered | Mexico (Baja California) |
| Antilocapra americana sonoriensis | Sonoran pronghorn | Mammals | Endangered | Wherever found, except where listed as an experimental population |
| Antrostomus noctitherus | Puerto Rican nightjar | Birds | Endangered | Wherever found |
| Aonyx congicus (=congica) microdon | Cameroon clawless otter | Mammals | Endangered | Wherever found |
| Aplodontia rufa nigra | Point Arena mountain beaver | Mammals | Endangered | Wherever found |
| Aplonis pelzelni | Ponape mountain starling | Birds | Endangered | Wherever found |
| Aproteles bulmerae | Bulmer's fruit bat (=flying fox) | Mammals | Endangered | Wherever found |
| Aquila heliaca adalberti | Spanish imperial eagle | Birds | Endangered | Wherever found |
| Ara ambiguus | Great green macaw | Birds | Endangered | Wherever found |
| Ara glaucogularis | Blue-throated macaw | Birds | Endangered | Wherever found |
| Ara macao ssp. cyanopterus | Scarlet macaw | Birds | Endangered | Wherever found |
| Ara militaris | Military macaw | Birds | Endangered | Wherever found |
| Ardeotis (=Choriotis) nigriceps | Great Indian bustard | Birds | Endangered | Wherever found |
| Ateles geoffroyi frontatus | Spider monkey | Mammals | Endangered | Wherever found |
| Ateles geoffroyl panamensis | Spider monkey | Mammals | Endangered | Wherever found |
| Atelopus varius zeteki | Panamanian golden frog | Amphibians | Endangered | Wherever found |
| Atrichornis clamosus | Noisy scrub-bird | Birds | Endangered | Wherever found |
| Avahi laniger (entire genus) | Avahi | Mammals | Endangered | Wherever found |
| Axis porcinus annamiticus | Indochina hog deer | Mammals | Endangered | Wherever found |
| Axis porcinus calamianensis | Calamianes (=Philippine) deer | Mammals | Endangered | Wherever found |
| Axis porcinus kuhli | Kuhl's (=Bawean) deer | Mammals | Endangered | Wherever found |
| Aythya innotata | Madagascar pochard | Birds | Endangered | Wherever found |
| Babyrousa babyrussa | Babirusa | Mammals | Endangered | Wherever found |
| Balaena mysticetus | Bowhead whale | Mammals | Endangered | Wherever found |
| Balaenoptera borealis | Sei whale | Mammals | Endangered | Wherever found |
| Balaenoptera edeni | Gulf of Mexico Bryde's Whale | Mammals | Endangered | Entire |
| Balaenoptera musculus | Blue whale | Mammals | Endangered | Wherever found |
| Balaenoptera physalus | Finback whale | Mammals | Endangered | Wherever found |
| Batagur baska | River terrapin | Reptiles | Endangered | Wherever found |
| Batrachoseps aridus | Desert slender salamander | Amphibians | Endangered | Wherever found |
| Bebrornis rodericanus | Rodrigues warbler (old world warbler) | Birds | Endangered | Wherever found |
| Bebrornis sechellensis | Seychelles warbler (old world warbler) | Birds | Endangered | Wherever found |
| Bettongia gaimardi | Gaimard's rat-kangaroo | Mammals | Endangered | Wherever found |
| Bettongia lesueur | Lesueur's rat-kangaroo | Mammals | Endangered | Wherever found |
| Bettongia penicillata | Brush-tailed rat-kangaroo | Mammals | Endangered | Wherever found |
| Bettongia tropica | Queensland rat-kangaroo | Mammals | Endangered | Wherever found |
| Blastocerus dichotomus | Marsh deer | Mammals | Endangered | Wherever found |
| Bolyeria multocarinata | Round Island bolyeria boa | Reptiles | Endangered | Wherever found |
| Bos gaurus | Seledang | Mammals | Endangered | Wherever found |
| Bos javanicus | Banteng | Mammals | Endangered | Wherever found |
| Bos mutus (=grunniens m.) | Wild yak | Mammals | Endangered | Wherever found |
| Bos sauveli | Kouprey | Mammals | Endangered | Wherever found |
| Brachylagus idahoensis | Pygmy Rabbit | Mammals | Endangered | Columbia Basin DPS (WA-Douglas, Grant, Lincoln, Adams, Benton Counties) |
| Brachylophus fasciatus | Fiji banded iguana | Reptiles | Endangered | Wherever found |
| Brachylophus vitiensis | Fiji crested iguana | Reptiles | Endangered | Wherever found |
| Brachyteles arachnoides | Woolly spider monkey | Mammals | Endangered | Wherever found |
| Bradypus torquatus | Brazilian three-toed sloth | Mammals | Endangered | Wherever found |
| Bubalus depressicornis | Lowland anoa | Mammals | Endangered | Wherever found |
| Bubalus mindorensis | Tamaraw | Mammals | Endangered | Wherever found |
| Bubalus quarlesi | Mountain anoa | Mammals | Endangered | Wherever found |
| Buceros (=Rhinoplax) vigil | Helmeted hornbill | Birds | Endangered | Wherever found |
| Bufo houstonensis | Houston toad | Amphibians | Endangered | Wherever found |
| Bufo periglenes | Monte Verde golden toad | Amphibians | Endangered | Wherever found |
| Bufo superciliaris | Cameroon toad | Amphibians | Endangered | Wherever found |
| Burramys parvus | Mountain pygmy possum | Mammals | Endangered | Wherever found |
| Buteo galapagoensis | Galapagos hawk | Birds | Endangered | Wherever found |
| Buteo platypterus brunnescens | Puerto Rican broad-winged hawk | Birds | Endangered | Wherever found |
| Cacajao spp. | Uakari (all species) | Mammals | Endangered | Wherever found |
| Cacatua haematuropygia | Philippine cockatoo | Birds | Endangered | Wherever found |
| Cacatua sulphurea | Yellow-crested cockatoo | Birds | Endangered | Wherever found |
| Caiman crocodilus apaporiensis | Apaporis River caiman | Reptiles | Endangered | Wherever found |
| Caiman latirostris | Broad-snouted caiman | Reptiles | Endangered | Bolivia, Brazil, Paraguay, and Uruguay |
| Cairina scutulata | White-winged wood duck | Birds | Endangered | Wherever found |
| Callaeas cinerea | Kokako (wattlebird) | Birds | Endangered | Wherever found |
| Callimico goeldii | Goeldi's marmoset | Mammals | Endangered | Wherever found |
| Callithrix aurita (=jacchus a.) | White-eared (=buffy tufted-ear) marmoset | Mammals | Endangered | Wherever found |
| Callithrix flaviceps | Buff-headed marmoset | Mammals | Endangered | Wherever found |
| Caloprymnus campestris | Desert (=plain) rat-kangaroo | Mammals | Endangered | Wherever found |
| Camarhynchus pauper | Floreana tree-Finch | Birds | Endangered | Wherever found |
| Camelus bactrianus | Bactrian camel | Mammals | Endangered | Wherever found |
| Campephilus imperialis | Imperial woodpecker | Birds | Endangered | Wherever found |
| Campephilus principalis | Ivory-billed woodpecker | Birds | Endangered | Wherever found |
| Canis lupus | Gray wolf | Mammals | Endangered | U.S.A.: All of AL, AR, CA, CO, CT, DE, FL, GA, IA, IN, IL, KS, KY, LA, MA, MD, ME, MI, MO, MS, NC, ND, NE, NH, NJ, NV, NY, OH, OK, PA, RI, SC, SD, TN, TX, VA, VT, WI, and WV; and portions of AZ, NM, OR, UT, and WA as follows: (1) Northern AZ (that portion north of the centerline of Interstate Highway 40); (2) Northern NM (that portion north of the centerline of Interstate Highway 40); (3) Western OR (that portion of OR west of the centerline of Highway 395 and Highway 78 north of Burns Junction and that portion of OR west of the centerline of Highway 95 south of Burns Junction); (4) Most of Utah (that portion of UT south and west of the centerline of Highway 84 and that portion of UT south of Highway 80 from Echo to the UT/WY Stateline); and (5) Western WA (that portion of WA west of the centerline of Highway 97 and Highway 17 north of Mesa and that portion of WA west of the centerline of Highway 395 south of Mesa). Mexico. |
| Canis lupus baileyi | Mexican wolf | Mammals | Endangered | Wherever found, except where included in an experimental population as set forth in 17.84(k) |
| Canis rufus | Red wolf | Mammals | Endangered | Wherever found, except where listed as an experimental population |
| Canis simensis | Simien fox | Mammals | Endangered | Wherever found |
| Capra falconeri (=aegragrus) chiltanensis | Chiltan (=wild goat) markhor | Mammals | Endangered | Wherever found |
| Capra pyrenaica pyrenaica | Pyrenean ibex | Mammals | Endangered | Wherever found |
| Capra walie | Walia ibex | Mammals | Endangered | Wherever found |
| Caprolagus hispidus | Hispid hare | Mammals | Endangered | Wherever found |
| Capromys angelcabrerai | Cabrera's hutia | Mammals | Endangered | Wherever found |
| Capromys auritus | Large-eared hutia | Mammals | Endangered | Wherever found |
| Capromys nana | Dwarf hutia | Mammals | Endangered | Wherever found |
| Capromys sanfelipensis | Little earth hutia | Mammals | Endangered | Wherever found |
| Carduelis cucullata | Red siskin | Birds | Endangered | Wherever found |
| Caretta caretta | Loggerhead sea turtle | Reptiles | Endangered | Loggerhead sea turtles originating from the South Pacific south of the equator, north of 60 degrees S. Lat., west of 67 degrees W. Long., and east of 141 degrees E. Long. |
| Caretta caretta | Loggerhead sea turtle | Reptiles | Endangered | Mediterranean Sea DPS - Loggerhead sea turtles originating from the Mediterranean Sea east of 5 degrees 36 minues W. Long. |
| Caretta caretta | Loggerhead sea turtle | Reptiles | Endangered | Northeast Atlantic Ocean DPS - Loggerhead sea turtles originating from the Northeast Atlantic Ocean north of the equator, south of 60 degrees N. Lat., and east of 40 degrees W. Long., except in the vicinity of the Strait of Gibraltar where the eastern boundary is 5 degrees 36 minutes W. Long |
| Caretta caretta | Loggerhead sea turtle | Reptiles | Endangered | North Indian Ocean DPS - Loggerhead sea turtles originating from the North Indian Ocean north of the equator and south of 30? N. Lat |
| Caretta caretta | Loggerhead sea turtle | Reptiles | Endangered | North Pacific Ocean DPS - Loggerhead sea turtles originating from the North Pacific north of the equator and south of 60 degrees N. Lat |
| Casarea dussumieri | Round Island casarea boa | Reptiles | Endangered | Wherever found |
| Castor fiber birulai | Beaver (Mongolian) | Mammals | Endangered | Wherever found |
| Catopuma (=Felis) temminckii | Asian golden (=Temmnick's) cat | Mammals | Endangered | Wherever found |
| Catostomus discobolus yarrowi | Zuni bluehead Sucker | Fishes | Endangered | Wherever found |
| Catreus wallichii | Cheer pheasant | Birds | Endangered | Wherever found |
| Cephalophus jentinki | Jentink's duiker | Mammals | Endangered | Wherever found |
| Cephalorhynchus hectori maui | Maui dolphin | Mammals | Endangered | Entire |
| Ceratotherium simum cottoni | Northern white rhinoceros | Mammals | Endangered | Zaire, Uganda, Sudan, Central African Republic |
| Cercocebus galeritus galeritus | Tana River mangabey | Mammals | Endangered | Wherever found |
| Cercocebus torquatus | White-collared mangabey | Mammals | Endangered | Wherever found |
| Cercopithecus diana | Diana monkey | Mammals | Endangered | Wherever found |
| Cercopithecus erythrogaster | Red-bellied monkey | Mammals | Endangered | Wherever found |
| Cercopithecus erythrotis | Red-eared nose-spotted monkey | Mammals | Endangered | Wherever found |
| Cercopithecus lhoesti | L'hoest's monkey | Mammals | Endangered | Wherever found |
| Cervus alfredi | Visayan deer | Mammals | Endangered | Wherever found |
| Cervus duvauceli | Swamp deer | Mammals | Endangered | Wherever found |
| Cervus elaphus bactrianus | Bactrian deer | Mammals | Endangered | Wherever found |
| Cervus elaphus barbarus | Barbary deer | Mammals | Endangered | Wherever found |
| Cervus elaphus corsicanus | Corsican red deer | Mammals | Endangered | Wherever found |
| Cervus elaphus hanglu | Kashmir stag | Mammals | Endangered | Wherever found |
| Cervus elaphus macneilii | McNeill's deer | Mammals | Endangered | Wherever found |
| Cervus elaphus wallichi | Shou | Mammals | Endangered | Wherever found |
| Cervus elaphus yarkandensis | Yarkand deer | Mammals | Endangered | Wherever found |
| Cervus eldi | Eld's brow-antlered Deer | Mammals | Endangered | Wherever found |
| Cervus nippon grassianus | Shansi sika deer | Mammals | Endangered | Wherever found |
| Cervus nippon keramae | Ryukyu sika deer | Mammals | Endangered | Wherever found |
| Cervus nippon kopschi | South China sika deer | Mammals | Endangered | Wherever found |
| Cervus nippon mandarinus | North China sika deer | Mammals | Endangered | Wherever found |
| Cervus nippon taiouanus | Formosan sika deer | Mammals | Endangered | Wherever found |
| Chaeropus ecaudatus | Pig-footed bandicoot | Mammals | Endangered | Wherever found |
| Chaetocercus berlepschi | Esmeraldas woodstar | Birds | Endangered | Wherever found |
| Chaetomys subspinosus | Thin-spined porcupine | Mammals | Endangered | Wherever found |
| Charadrius melodus | Piping Plover | Birds | Endangered | [Great Lakes watershed DPS] - Great Lakes, watershed in States of IL, IN, MI, MN, NY, OH, PA, and WI and Canada (Ont.) |
| Chasiempis ibidis | Oahu elepaio | Birds | Endangered | Wherever found |
| Chasmistes brevirostris | Shortnose Sucker | Fishes | Endangered | Wherever found |
| Chasmistes cujus | Cui-ui | Fishes | Endangered | Wherever found |
| Chelonia mydas | Green sea turtle | Reptiles | Endangered | Green sea turtles originating from the Central South Pacific Ocean, bounded by the following coordinates: 9 degrees N., 175 degrees W. in the northwest; 9 degrees N., 125 degrees W. in the northeast; 40 degrees S., 96 degrees W. in the southeast; 40 degrees S., 176 degrees E. in the southwest; and 13 degrees S., 171 degrees E. in the west |
| Chelonia mydas | Green sea turtle | Reptiles | Endangered | Green sea turtles originating from the Central West Pacific Ocean, bounded by the following coordinates: 41 degrees N., 146 degrees E. in the northwest; 41 degrees N., 169 degrees E. in the northeast; 9 degrees N., 175 degrees W. in the east; 13 degrees S., 171 degrees E. in the southeast; along the northern coast of the island of New Guinea; and 4.5 degrees N., 129 degrees E. in the west |
| Chelonia mydas | Green sea turtle | Reptiles | Endangered | Green sea turtles originating from the Mediterranean Sea, bounded by 5.5 degrees W. Long. in the west |
| Chilabothrus granti | Virgin Islands tree boa | Reptiles | Endangered | Wherever found |
| Chilabothrus inornatus | Puerto Rican boa | Reptiles | Endangered | Wherever found |
| Chinchilla chinchilla boliviana | Bolivian short-tailed chinchilla | Mammals | Endangered | Wherever found |
| Chiropotes albinasus | White-nosed saki | Mammals | Endangered | Wherever found |
| Chiropotes satanas satanas | Southern bearded saki | Mammals | Endangered | Wherever found |
| Chlamyphorus truncatus | Pink fairy armadillo | Mammals | Endangered | Wherever found |
| Chondrohierax uncinatus mirus | Grenada hook-billed kite | Birds | Endangered | Wherever found |
| Chondrohierax uncinatus wilsonii | Cuba hook-billed kite | Birds | Endangered | Wherever found |
| Chrosomus saylori | Laurel dace | Fishes | Endangered | Wherever found |
| Chrysocyon brachyurus | Maned wolf | Mammals | Endangered | Wherever found |
| Cichlherminia iherminieri santaeluciae | St. Lucia Forest thrush | Birds | Endangered | Wherever found |
| Ciconia boyciana (=ciconia b.) | Oriental white stork | Birds | Endangered | Wherever found |
| Cinclocerthia ruficauda gutturalis | Martinique trembler (thrasher) | Birds | Endangered | Wherever found |
| Cinclodes aricomae | Royal cinclodes | Birds | Endangered | Wherever found |
| Cnemidophorus vanzoi | Maria Island ground lizard | Reptiles | Endangered | Wherever found |
| Colinus virginianus ridgwayi | Masked bobwhite (quail) | Birds | Endangered | Wherever found |
| Colobus satanas | Black colobus monkey | Mammals | Endangered | Wherever found |
| Columba mayeri | Pink pigeon | Birds | Endangered | Wherever found |
| Columba palumbus azorica | Azores wood pigeon | Birds | Endangered | Wherever found |
| Conolophus pallidus | Barrington land iguana | Reptiles | Endangered | Wherever found |
| Copsychus niger cebuensis | Cebu black shama (thrush) | Birds | Endangered | Wherever found |
| Copsychus sechellarum | Seychelles magpie-robin (thrush) | Birds | Endangered | Wherever found |
| Coquus newtoni | Reunion cuckoo-shrike | Birds | Endangered | Wherever found |
| Coquus typicus | Mauritius cuckoo-shrike | Birds | Endangered | Wherever found |
| Coracopsis nigra barklyi | Seychelles lesser vasa parrot | Birds | Endangered | Wherever found |
| Coreobagrus ichikawai | Nekogigi (catfish) | Fishes | Endangered | Wherever found |
| Corvus hawaiiensis | Hawaiian crow | Birds | Endangered | Wherever found |
| Corvus kubaryi | Mariana (=aga) Crow | Birds | Endangered | Wherever found |
| Corvus leucognaphalus | White-necked crow | Birds | Endangered | Wherever found |
| Corynorhinus (=Plecotus) townsendii ingens | Ozark big-eared bat | Mammals | Endangered | Wherever found |
| Corynorhinus (=Plecotus) townsendii virginianus | Virginia big-eared bat | Mammals | Endangered | Wherever found |
| Cotinga maculata | Banded cotinga | Birds | Endangered | Wherever found |
| Cottus specus | Grotto Sculpin | Fishes | Endangered | Wherever found |
| Craseonycteris thonglongyai | Bumblebee bat | Mammals | Endangered | Wherever found |
| Crax alberti | Blue-billed curassow | Birds | Endangered | Wherever found |
| Crax blumenbachii | Red-billed curassow | Birds | Endangered | Wherever found |
| Crenichthys baileyi baileyi | White River springfish | Fishes | Endangered | Wherever found |
| Crenichthys baileyi grandis | Hiko White River springfish | Fishes | Endangered | Wherever found |
| Crocodylus acutus | American crocodile | Reptiles | Endangered | Wherever found, except in U.S.A. (FL) |
| Crocodylus cataphractus | African slender-snouted crocodile | Reptiles | Endangered | Wherever found |
| Crocodylus intermedius | Orinoco crocodile | Reptiles | Endangered | Wherever found |
| Crocodylus novaeguineae mindorensis | Philippine crocodile | Reptiles | Endangered | Wherever found |
| Crocodylus palustris kimbula | Ceylon mugger crocodile | Reptiles | Endangered | Wherever found |
| Crocodylus palustris palustris | Mugger crocodile | Reptiles | Endangered | Wherever found |
| Crocodylus porosus | Saltwater crocodile | Reptiles | Endangered | Wherever found, except Papua New Guinea and Australia |
| Crocodylus rhombifer | Cuban crocodile | Reptiles | Endangered | Wherever found |
| Crocodylus siamensis | Siamese crocodile | Reptiles | Endangered | Wherever found |
| Crossoptilon crossoptilon | White eared pheasant | Birds | Endangered | Wherever found |
| Crossoptilon mantchuricum | Brown eared pheasant | Birds | Endangered | Wherever found |
| Cryptobranchus alleganiensis | Eastern Hellbender | Amphibians | Endangered | Missouri DPS |
| Cryptobranchus alleganiensis bishopi | Ozark Hellbender | Amphibians | Endangered | Wherever found |
| Crystallaria cincotta | diamond Darter | Fishes | Endangered | Wherever found |
| Cuon alpinus | Dhole | Mammals | Endangered | Wherever found |
| Cyanopsitta spixii | Little blue macaw | Birds | Endangered | Wherever found |
| Cyanoramphus auriceps forbesi | Forbes' parakeet | Birds | Endangered | Wherever found |
| Cyanoramphus cookii (=novaezelandiae c.) | Norfolk Island parakeet | Birds | Endangered | Wherever found |
| Cyclura collei | Jamaican iguana | Reptiles | Endangered | Wherever found |
| Cyclura lewisi | Grand Cayman ground iguana | Reptiles | Endangered | Wherever found |
| Cyclura pinguis | Anegada ground iguana | Reptiles | Endangered | Wherever found |
| Cyclura rileyi rileyi | Watling Island ground iguana | Reptiles | Endangered | Wherever found |
| Cynomys mexicanus | Mexican prairie dog | Mammals | Endangered | Mexico |
| Cynoscion macdonaldi | Totoaba (seatrout or weakfish) | Fishes | Endangered | Wherever found |
| Cyprinodon bovinus | Leon Springs pupfish | Fishes | Endangered | Wherever found |
| Cyprinodon diabolis | Devils Hole pupfish | Fishes | Endangered | Wherever found |
| Cyprinodon elegans | Comanche Springs pupfish | Fishes | Endangered | Wherever found |
| Cyprinodon macularius | Desert pupfish | Fishes | Endangered | Wherever found |
| Cyprinodon nevadensis mionectes | Ash Meadows Amargosa pupfish | Fishes | Endangered | Wherever found |
| Cyprinodon nevadensis pectoralis | Warm Springs pupfish | Fishes | Endangered | Wherever found |
| Cyprinodon radiosus | Owens pupfish | Fishes | Endangered | Wherever found |
| Cyrtonyx montezumae merriami | Merriam's Montezuma quail | Birds | Endangered | Wherever found |
| Damaliscus pygarus (=dorcas) dorcas | Bontebok | Mammals | Endangered | Wherever found |
| Dama mesopotamica (=dama m.) | Persian fallow deer | Mammals | Endangered | Wherever found |
| Dasyornis broadbenti littoralis | Western rufous bristlebird | Birds | Endangered | Wherever found |
| Dasyornis longirostris (=brachypterus I.) | Western bristlebird | Birds | Endangered | Wherever found |
| Dasyurus viverrinus | Eastern native-cat | Mammals | Endangered | Wherever found |
| Daubentonia madagascariensis | Aye-aye | Mammals | Endangered | Wherever found |
| Delphinapterus leucas | beluga whale | Mammals | Endangered | Cook Inlet DPS See 50 CFR 224.101 |
| Deltistes luxatus | Lost River sucker | Fishes | Endangered | Wherever found |
| Dendroica petechia petechia | Barbados yellow warbler (=wood) | Birds | Endangered | Wherever found |
| Dermatemys mawii | Central American river turtle | Reptiles | Endangered | Wherever found |
| Dermochelys coriacea | Leatherback sea turtle | Reptiles | Endangered | Wherever found |
| Dicerorhinus sumatrensis | Sumatran rhinoceros | Mammals | Endangered | Wherever found |
| Diceros bicornis | Black rhinoceros | Mammals | Endangered | Sub-Saharan Africa |
| Diomedia amsterdamensis | Amsterdam Albatross | Birds | Endangered | Wherever found |
| Dipodomys heermanni morroensis | Morro Bay kangaroo rat | Mammals | Endangered | Wherever found |
| Dipodomys ingens | Giant kangaroo rat | Mammals | Endangered | Wherever found |
| Dipodomys merriami parvus | San Bernardino Merriam's kangaroo rat | Mammals | Endangered | Wherever found |
| Dipodomys nitratoides exilis | Fresno kangaroo rat | Mammals | Endangered | Wherever found |
| Dipodomys nitratoides nitratoides | Tipton kangaroo rat | Mammals | Endangered | Wherever found |
| Discoglossus nigriventer | Israel painted frog | Amphibians | Endangered | Wherever found |
| Drepanoptila holosericea | Cloven-feathered dove | Birds | Endangered | Wherever found |
| Dryocopus javensis richardsi | Tristam's woodpecker | Birds | Endangered | Wherever found |
| Ducula galeata | Marquesas pigeon | Birds | Endangered | Wherever found |
| Ducula mindorensis | Mindoro imperial (=zone-tailed) pigeon | Birds | Endangered | Wherever found |
| Dugong dugon | Dugong | Mammals | Endangered | Wherever found |
| Egretta eulophotes | Chinese egret | Birds | Endangered | Wherever found |
| Elephas maximus | Asian elephant | Mammals | Endangered | Wherever found |
| Eleutherodactylus juanariveroi | Llanero Coqui | Amphibians | Endangered | Wherever found |
| Emballonura semicaudata rotensis | Pacific sheath-tailed Bat | Mammals | Endangered | Wherever found |
| Emballonura semicaudata semicaudata | Pacific sheath-tailed Bat | Mammals | Endangered | American Samoa |
| Emoia slevini | Slevin's skink | Reptiles | Endangered | Wherever found |
| Empetrichthys latos | Pahrump poolfish | Fishes | Endangered | Wherever found |
| Empidonax euleri johnstonei | Euler's flycatcher | Birds | Endangered | Wherever found |
| Empidonax traillii extimus | Southwestern willow flycatcher | Birds | Endangered | Wherever found |
| Epicrates subflavus | Jamaican boa | Reptiles | Endangered | Wherever found |
| Equus africanus | African wild ass | Mammals | Endangered | Wherever found |
| Equus hemionus | Asian wild ass | Mammals | Endangered | Wherever found |
| Equus przewalskii | Przewalski's horse | Mammals | Endangered | Wherever found |
| Equus zebra ssp. zebra | Cape Mountain zebra | Mammals | Endangered | Entire |
| Equus zebra zebra | Mountain zebra | Mammals | Endangered | Wherever found |
| Eretmochelys imbricata | Hawksbill sea turtle | Reptiles | Endangered | Wherever found |
| Eriocnemis nigrivestis | black-breasted puffleg | Birds | Endangered | Wherever found |
| Eschrichtius robustus | Gray whale | Mammals | Endangered | Western North Pacific DPS See 50 CFR 224.101 |
| Etheostoma akatulo | bluemask darter | Fishes | Endangered | Wherever found |
| Etheostoma chermocki | Vermilion darter | Fishes | Endangered | Wherever found |
| Etheostoma etowahae | Etowah darter | Fishes | Endangered | Wherever found |
| Etheostoma fonticola | Fountain darter | Fishes | Endangered | Wherever found |
| Etheostoma moorei | Yellowcheek Darter | Fishes | Endangered | Wherever found |
| Etheostoma nuchale | Watercress darter | Fishes | Endangered | Wherever found |
| Etheostoma osburni | Candy darter | Fishes | Endangered | Wherever found |
| Etheostoma percnurum | Duskytail darter | Fishes | Endangered | Wherever found |
| Etheostoma phytophilum | Rush Darter | Fishes | Endangered | Wherever found |
| Etheostoma sellare | Maryland darter | Fishes | Endangered | Wherever found |
| Etheostoma susanae | Cumberland darter | Fishes | Endangered | Wherever found |
| Etheostoma wapiti | Boulder darter | Fishes | Endangered | Wherever found |
| Eubalaena australis | Southern Right Whale | Mammals | Endangered | Wherever found |
| Eubalaena glacialis | North Atlantic Right Whale | Mammals | Endangered | Wherever found |
| Eubalaena japonica | North Pacific Right Whale | Mammals | Endangered | Wherever found |
| Eucyclogobius newberryi | Tidewater goby | Fishes | Endangered | Wherever found |
| Eulidia yarrellii | Chilean woodstar | Birds | Endangered | Wherever found |
| Eumetopias jubatus | Steller sea lion | Mammals | Endangered | Western DPS - See 50 CFR 224.101 |
| Eumops floridanus | Florida bonneted bat | Mammals | Endangered | Wherever found |
| Eurycea rathbuni | Texas blind salamander | Amphibians | Endangered | Wherever found |
| Eurycea sosorum | Barton Springs salamander | Amphibians | Endangered | Wherever found |
| Eurycea waterlooensis | Austin blind Salamander | Amphibians | Endangered | Wherever found |
| Eutrichomyias rowleyi | Caerulean Paradise flycatcher | Birds | Endangered | Wherever found |
| Eutriorchis astur | Madagascar serpent eagle | Birds | Endangered | Wherever found |
| Falco araea | Seychelles kestrel | Birds | Endangered | Wherever found |
| Falco femoralis septentrionalis | Northern Aplomado Falcon | Birds | Endangered | Wherever found, except where listed as an experimental population |
| Falco peregrinus peregrinus | Eurasian peregrine falcon | Birds | Endangered | Wherever found |
| Falco punctatus | Mauritius kestrel | Birds | Endangered | Wherever found |
| Felis jacobita | Andean cat | Mammals | Endangered | Wherever found |
| Felis margarita scheffeli | Pakistan sand cat | Mammals | Endangered | Wherever found |
| Felis nigripes | Black-footed cat | Mammals | Endangered | Wherever found |
| Felis pardina | Spanish lynx | Mammals | Endangered | Wherever found |
| Formicivora erythronotos | Black hooded (black-headed) antwren | Birds | Endangered | Wherever found |
| Foudia flavicans | Rodrigues fody | Birds | Endangered | Wherever found |
| Foudia rubra | Mauritius fody | Birds | Endangered | Wherever found |
| Foudia sechellarum | Seychelles fody (weaver-finch) | Birds | Endangered | Wherever found |
| Francolinus ochropectus | Djibouti francolin | Birds | Endangered | Wherever found |
| Fregata andrewsi | Andrew's frigatebird | Birds | Endangered | Wherever found |
| Fulica alai | Hawaiian coot (alae ke`oke`o) | Birds | Endangered | Wherever found |
| Fundulus julisia | Barrens topminnow | Fishes | Endangered | Wherever found |
| Gallicolumba stairi | Friendly Ground-Dove | Birds | Endangered | American Samoa DPS |
| Gallinula chloropus guami | Mariana common moorhen (pulattat) | Birds | Endangered | Wherever found |
| Gallinula galeata sandvicensis | Hawaiian common gallinule | Birds | Endangered | Wherever found |
| Gallirallus owstoni | Guam rail | Birds | Endangered | Wherever found, except where listed as an experimental population |
| Gallirallus (=Tricholimnas) sylvestris | Lord Howe wood rail | Birds | Endangered | Wherever found |
| Gallotia simonyi simonyi | Hierro giant lizard | Reptiles | Endangered | Wherever found |
| Gambelia silus | Blunt-nosed leopard lizard | Reptiles | Endangered | Wherever found |
| Gambusia gaigei | Big Bend gambusia | Fishes | Endangered | Wherever found |
| Gambusia heterochir | Clear Creek gambusia | Fishes | Endangered | Wherever found |
| Gambusia nobilis | Pecos gambusia | Fishes | Endangered | Wherever found |
| Gasterosteus aculeatus williamsoni | Unarmored threespine stickleback | Fishes | Endangered | Wherever found |
| Gavialis gangeticus | Gavial | Reptiles | Endangered | Wherever found |
| Gazella cuvieri | Mountain (=Cuvier's) gazelle | Mammals | Endangered | Wherever found |
| Gazella dama | Dama gazelle | Mammals | Endangered | Wherever found |
| Gazella dama lozanoi | Rio de Oro Dama gazelle | Mammals | Endangered | Wherever found |
| Gazella dama mhorr | Mhorr gazelle | Mammals | Endangered | Wherever found |
| Gazella dorcas massaesyla | Moroccan gazelle | Mammals | Endangered | Wherever found |
| Gazella dorcas pelzelni | Pelzeln's gazelle | Mammals | Endangered | Wherever found |
| Gazella dorcas saudiya | Saudi Arabian gazelle | Mammals | Endangered | Wherever found |
| Gazella gazella | Arabian gazelle | Mammals | Endangered | Wherever found |
| Gazella leptoceros | Slender-horned gazelle | Mammals | Endangered | Wherever found |
| Gazella subgutturosa marica | Sand gazelle | Mammals | Endangered | Wherever found |
| Geochelone nigra (=elephantopus) | Galapagos tortoise | Reptiles | Endangered | Wherever found |
| Geochelone radiata | Madagascar radiated tortoise | Reptiles | Endangered | Wherever found |
| Geochelone yniphora | Angulated tortoise | Reptiles | Endangered | Wherever found |
| Geoclemys hamiltonii | Spotted pond turtle | Reptiles | Endangered | Wherever found |
| Geopsittacus occidentalis | Night (=Australian) parrot | Birds | Endangered | Wherever found |
| Geronticus eremita | Northern bald ibis | Birds | Endangered | Wherever found |
| Gila bicolor ssp. mohavensis | Mohave tui chub | Fishes | Endangered | Wherever found |
| Gila bicolor ssp. snyderi | Owens Tui Chub | Fishes | Endangered | Wherever found |
| Gila elegans | Bonytail | Fishes | Endangered | Wherever found |
| Gila intermedia | Gila chub | Fishes | Endangered | Wherever found |
| Gila purpurea | Yaqui chub | Fishes | Endangered | Wherever found |
| Gila robusta jordani | Pahranagat roundtail chub | Fishes | Endangered | Wherever found |
| Gila seminuda (=robusta) | Virgin River Chub | Fishes | Endangered | Wherever found |
| Glaucomys sabrinus coloratus | Carolina northern flying squirrel | Mammals | Endangered | Wherever found |
| Gopherus flavomarginatus | Bolson tortoise | Reptiles | Endangered | Wherever found |
| Gorilla gorilla | Gorilla | Mammals | Endangered | Wherever found |
| Grallaria milleri | Brown-banded antpitta | Birds | Endangered | Wherever found |
| Grus americana | Whooping crane | Birds | Endangered | Wherever found, except where listed as an experimental population |
| Grus canadensis nesiotes | Cuba sandhill crane | Birds | Endangered | Wherever found |
| Grus japonensis | Japanese Crane | Birds | Endangered | Wherever found |
| Grus leucogeranus | Siberian white Crane | Birds | Endangered | Wherever found |
| Grus monacha | Hooded Crane | Birds | Endangered | Wherever found |
| Grus nigricollis | Black-necked Crane | Birds | Endangered | Wherever found |
| Grus vipio | White-naped Crane | Birds | Endangered | Wherever found |
| Gymnobelideus leadbeateri | Leadbeater's Possum | Mammals | Endangered | Wherever found |
| Gymnogyps californianus | California condor | Birds | Endangered | Wherever found, except where listed as an experimental population |
| Gymnomyza samoensis | Mao (= maomao) (honeyeater) | Birds | Endangered | Wherever found |
| Haematopus meadewaldoi | Canarian black oystercatcher | Birds | Endangered | Wherever found |
| Haliaeetus albicilla groenlandicus | Greenland white-tailed eagle | Birds | Endangered | Wherever found |
| Haliaeetus vociferoides | Madagascar sea eagle | Birds | Endangered | Wherever found |
| Harpia harpyja | Harpy eagle | Birds | Endangered | Wherever found |
| Hemignathus wilsoni | akiapolaau | Birds | Endangered | Wherever found |
| Hemiphaga novaeseelandiae chathamensis | Chatham Island pigeon | Birds | Endangered | Wherever found |
| Hemitragus jayakari | Arabian tahr | Mammals | Endangered | Wherever found |
| Hemitriccus kaempferi | Kaempfer's tody-tyrant | Birds | Endangered | Wherever found |
| Herpailurus (=Felis) yagouaroundi fossata | Guatemalan jaguarundi | Mammals | Endangered | Mexico,Nicaragua |
| Herpailurus (=Felis) yagouaroundi panamensis | Panamanian jaguarundi | Mammals | Endangered | Wherever found |
| Himantopus mexicanus knudseni | Hawaiian stilt | Birds | Endangered | Wherever found |
| Himantopus novaezelandiae | Black Stilt | Birds | Endangered | Wherever found |
| Hippocamelus antisensis | North Andean huemul | Mammals | Endangered | Wherever found |
| Hippocamelus bisulcus | South Andean huemul | Mammals | Endangered | Wherever found |
| Hipposideros ridleyi | Singapore roundleaf horseshoe bat | Mammals | Endangered | Wherever found |
| Hippotragus niger variani | Giant sable antelope | Mammals | Endangered | Wherever found |
| Huso dauricus | Kaluga sturgeon | Fishes | Endangered | Wherever found |
| Hyaena hyaena barbara | Barbary hyena | Mammals | Endangered | Wherever found |
| Hybognathus amarus | Rio Grande Silvery Minnow | Fishes | Endangered | Wherever found, except where listed as an experimental population |
| Hydrobates castro | Band-rumped Storm-petrel | Birds | Endangered | USA (HI) |
| Hylobates spp. (including Nomascus) | Gibbons | Mammals | Endangered | Wherever found |
| Hymenophysa curta | Ayumodoki (loach) | Fishes | Endangered | Wherever found |
| Hypsipetes borbonicus olivaceus | Mauritius olivaceous Bulbul | Birds | Endangered | Wherever found |
| Indri indri | Indri lemur | Mammals | Endangered | Wherever found |
| Kachuga tecta tecta | Indian sawback turtle | Reptiles | Endangered | Wherever found |
| Kinosternon sonoriense longifemorale | Sonoyta mud turtle | Reptiles | Endangered | Wherever found |
| Lagorchestes hirsutus | Western hare wallaby | Mammals | Endangered | Wherever found |
| Lagostrophus fasciatus | Banded hare wallaby | Mammals | Endangered | Wherever found |
| Lagothrix flavicauda | Yellow-tailed woolly monkey | Mammals | Endangered | Wherever found |
| Lanius ludovicianus mearnsi | San Clemente loggerhead shrike | Birds | Endangered | Wherever found |
| Larus audouinii | Audouin's gull | Birds | Endangered | Wherever found |
| Larus relictus | Relict gull | Birds | Endangered | Wherever found |
| Lasiorhinus krefftii (formerly L. barnardi and L. gillespiei) | Queensland hairy-nosed wombat (incl. Barnard's) | Mammals | Endangered | Wherever found |
| Lasiurus cinereus semotus | Hawaiian hoary bat | Mammals | Endangered | Wherever found |
| Laterallus tuerosi | Junin rail | Birds | Endangered | Wherever found |
| Leiopelma hamiltoni | Stephen Island frog | Amphibians | Endangered | Wherever found |
| Lemuridae (incl. genera Lemur, Phaner, Hapalemur, Lepilemur, Microcebus, Allocebus, Cheirogaleus, Varecia) | Lemurs | Mammals | Endangered | Wherever found |
| Leontopithecus spp. | Golden-rumped tamarin | Mammals | Endangered | Wherever found |
| Leopardus (=Felis) pardalis | Ocelot | Mammals | Endangered | wherever found |
| Leopardus (=Felis) tigrinus | Tiger cat | Mammals | Endangered | Wherever found |
| Leopardus (=Felis) wiedii | Margay | Mammals | Endangered | Wherever found |
| Lepidochelys kempii | Kemp's ridley sea turtle | Reptiles | Endangered | Wherever found |
| Lepidochelys olivacea | Olive ridley sea turtle | Reptiles | Endangered | Breeding colony populations on Pacific coast of Mexico |
| Lepidomeda albivallis | White River spinedace | Fishes | Endangered | Wherever found |
| Leporillus conditor | Stick-nest rat | Mammals | Endangered | Wherever found |
| Leptailurus (=Felis) serval constantina | Barbary serval | Mammals | Endangered | Wherever found |
| Leptasthenura xenothorax | White-browed tit-spinetail | Birds | Endangered | Wherever found |
| Leptonycteris nivalis | Mexican long-nosed bat | Mammals | Endangered | Wherever found |
| Leptoptilos dubius | Greater adjutant | Birds | Endangered | Wherever found |
| Leptotila rufaxilla wellsi | Grenada gray-fronted dove | Birds | Endangered | Wherever found |
| Leucopeza semperi | Semper's warbler (=wood) | Birds | Endangered | Wherever found |
| Leucopsar rothschildi | Rothschild's starling (myna) | Birds | Endangered | Wherever found |
| Lichenostomus melanops cassidix (=Meliphaga c.) | Helmeted honeyeater | Birds | Endangered | Wherever found |
| Liophus ornatus | Maria Island snake | Reptiles | Endangered | Wherever found |
| Lipotes vexillifer | Chinese River Dolphin | Mammals | Endangered | Wherever found |
| Lontra (=Lutra) felina | Marine otter | Mammals | Endangered | Wherever found |
| Lontra (=Lutra) longicaudis (incl. platensis) | Long-tailed otter | Mammals | Endangered | Wherever found |
| Lontra (=Lutra) provocax | Southern river otter | Mammals | Endangered | Wherever found |
| Lophophorus lhuysii | Chinese monal pheasant | Birds | Endangered | Wherever found |
| Lophophorus sclateri | Sclater's monal pheasant | Birds | Endangered | Wherever found |
| Lophura edwardsi | Edward's pheasant | Birds | Endangered | Wherever found |
| Lophura imperialis | Imperial pheasant | Birds | Endangered | Wherever found |
| Lophura swinhoii | Swinhoe's pheasant | Birds | Endangered | Wherever found |
| Loxioides bailleui | Palila (honeycreeper) | Birds | Endangered | Wherever found |
| Loxops caeruleirostris | Akekee | Birds | Endangered | Wherever found |
| Loxops coccineus | Hawaii akepa | Birds | Endangered | Wherever found |
| Loxops mana | Hawaii creeper | Birds | Endangered | Wherever found |
| Lycaon pictus | African wild dog | Mammals | Endangered | Wherever found |
| Lynx (=Felis) rufus escuinapae | Mexican bobcat | Mammals | Endangered | Wherever found |
| Macaca silenus | Lion-tailed macaque | Mammals | Endangered | Wherever found |
| Macrhybopsis tetranema | Peppered chub | Fishes | Endangered | Wherever found |
| Macrocephalon maleo | Maleo megapode | Birds | Endangered | Wherever found |
| Macropus giganteus tasmaniensis | Tasmanian forester kangaroo | Mammals | Endangered | Wherever found |
| Macropus parma | Parma wallaby | Mammals | Endangered | Wherever found |
| Macrotis lagotis | Rabbit bandicoot | Mammals | Endangered | Wherever found |
| Macrotis leucura | Lesser rabbit bandicoot | Mammals | Endangered | Wherever found |
| Malimbus ibadanensis | Ibadan malimbe | Birds | Endangered | Wherever found |
| Mandrillus (=Papio) leucophaeus | Drill | Mammals | Endangered | Wherever found |
| Mandrillus (=Papio) sphinx | Mandrill | Mammals | Endangered | Wherever found |
| Manis temminckii | Temnick''s ground Pangolin | Mammals | Endangered | Wherever found |
| Marmota vancouverensis | Vancouver Island marmot | Mammals | Endangered | Wherever found |
| Martes flavigula chrysospila | Formosan yellow-throated marten | Mammals | Endangered | Wherever found |
| Meda fulgida | Spikedace | Fishes | Endangered | Wherever found |
| Megapodius laperouse | Micronesian megapode | Birds | Endangered | Wherever found |
| Megaptera novaeangliae | Humpback whale | Mammals | Endangered | Arabian Sea DPS |
| Megaptera novaeangliae | Humpback whale | Mammals | Endangered | Cape Verde Island/Northwest Africa |
| Megaptera novaeangliae | Humpback whale | Mammals | Endangered | Central America DPS |
| Megaptera novaeangliae | Humpback whale | Mammals | Endangered | Western North Pacific |
| Melanochelys tricarinata | Three-keeled Asian turtle | Reptiles | Endangered | Wherever found |
| Melanosuchus niger | Black caiman | Reptiles | Endangered | Wherever found |
| Mergus octosetaceus | Brazillian merganser | Birds | Endangered | Wherever found |
| Microtus californicus scirpensis | Amargosa vole | Mammals | Endangered | Wherever found |
| Microtus pennsylvanicus dukecampbelli | Florida salt marsh vole | Mammals | Endangered | Wherever found |
| Mimizuku (=Otus) gurneyi | Giant scops owl | Birds | Endangered | Wherever found |
| Mimus graysoni | Socorro mockingbird | Birds | Endangered | Wherever found |
| Mitu mitu mitu | Razor-billed curassow | Birds | Endangered | Wherever found |
| Moapa coriacea | Moapa dace | Fishes | Endangered | Wherever found |
| Monachus monachus | Mediterranean monk seal | Mammals | Endangered | Wherever found |
| Monachus schauinslandi | Hawaiian monk seal | Mammals | Endangered | Wherever found |
| Morenia ocellata | Burmese peacock turtle | Reptiles | Endangered | Wherever found |
| Moschus spp. (all species) | Musk deer | Mammals | Endangered | Afghanistan, Bhutan, Burma, China (Tibet, Yunnan), India, Nepal, Pakistan, Sikkim |
| Muntiacus feae | Fea's muntjac | Mammals | Endangered | Wherever found |
| Mustela nigripes | Black-footed ferret | Mammals | Endangered | Wherever found, except where listed as an experimental population |
| Mustelus fasciatus | Striped smoothhound shark | Fishes | Endangered | Entire |
| Myadestes lanaiensis rutha | Molokai `oloma`o | Birds | Endangered | Wherever found |
| Myadestes palmeri | Puaiohi | Birds | Endangered | Wherever found |
| Mycteroperca jordani | Gulf Grouper | Fishes | Endangered | Entire |
| Myotis grisescens | Gray bat | Mammals | Endangered | Wherever found |
| Myotis septentrionalis | Northern Long-Eared Bat | Mammals | Endangered | Wherever found |
| Myotis sodalis | Indiana bat | Mammals | Endangered | Wherever found |
| Myrmecobius fasciatus | Numbat | Mammals | Endangered | Wherever found |
| Naemorhedus (=Capricornis) sumatraensis | Serow | Mammals | Endangered | Wherever found |
| Naemorhedus goral | Goral | Mammals | Endangered | Wherever found |
| Nasalis concolor | Pagi Island langur | Mammals | Endangered | Wherever found |
| Nasalis larvatus | Proboscis monkey | Mammals | Endangered | Wherever found |
| Nectarinia prigoginei | Marungu sunbird | Birds | Endangered | Wherever found |
| Nectophrynoides spp. | African viviparous toads | Amphibians | Endangered | Wherever found |
| Necturus alabamensis | Black warrior (=Sipsey Fork) Waterdog | Amphibians | Endangered | Wherever found |
| Nemosia rourei | Cherry-throated tanager | Birds | Endangered | Wherever found |
| Neofelis nebulosa | Clouded leopard | Mammals | Endangered | Wherever found |
| Neomorphus geoffroyi dulcis | Southeastern rufous-vented ground cuckoo | Birds | Endangered | Wherever found |
| Neophema chrysogaster | Orange-bellied parakeet | Birds | Endangered | Wherever found |
| Neotoma floridana smalli | Key Largo woodrat | Mammals | Endangered | Wherever found |
| Neotoma fuscipes riparia | Riparian woodrat (=San Joaquin Valley) | Mammals | Endangered | Wherever found |
| Neotragus moschatus moschatus | Zanzibar suni | Mammals | Endangered | Wherever found |
| Nesillas aldabranus | Aldabra Warbler (old world warbler) | Birds | Endangered | Wherever found |
| Nipponia nippon | Japanese crested ibis | Birds | Endangered | Wherever found |
| Notomys aquilo | Australian native mouse | Mammals | Endangered | Wherever found |
| Notropis albizonatus | Palezone shiner | Fishes | Endangered | Wherever found |
| Notropis buccula | Smalleye Shiner | Fishes | Endangered | Wherever found |
| Notropis cahabae | Cahaba shiner | Fishes | Endangered | Wherever found |
| Notropis mekistocholas | Cape Fear shiner | Fishes | Endangered | Wherever found |
| Notropis oxyrhynchus | Sharpnose Shiner | Fishes | Endangered | Wherever found |
| Notropis topeka (=tristis) | Topeka shiner | Fishes | Endangered | Wherever found, except where listed as an experimental population |
| Noturus baileyi | Smoky madtom | Fishes | Endangered | Wherever found |
| Noturus crypticus | Chucky Madtom | Fishes | Endangered | Wherever found |
| Noturus furiosus | Carolina madtom | Fishes | Endangered | Wherever found |
| Noturus stanauli | Pygmy madtom | Fishes | Endangered | Wherever found |
| Numenius borealis | Eskimo curlew | Birds | Endangered | Wherever found |
| Numenius tenuirostris | Slender-billed curlew | Birds | Endangered | Wherever found |
| Odocoileus hemionus cerrosensis | Cedros Island mule Deer | Mammals | Endangered | Wherever found |
| Odocoileus virginianus clavium | Key deer | Mammals | Endangered | Wherever found |
| Odontophorus strophium | Gorgeted wood-quail | Birds | Endangered | Wherever found |
| Oncorhynchus (=Salmo) kisutch | Coho salmon | Fishes | Endangered | Central California Coast ESU - See 50 CFR 224.101 |
| Oncorhynchus (=Salmo) mykiss | Steelhead (Rainbow Trout) | Fishes | Endangered | Southern California DPS - See 50 CFR 224.101 |
| Oncorhynchus (=Salmo) nerka | Sockeye salmon | Fishes | Endangered | Snake River ESU - See 50 CFR 224.101 |
| Oncorhynchus (=Salmo) tshawytscha | Chinook salmon | Fishes | Endangered | Sacramento River winter-run ESU - See 50 CFR 224.101 |
| Oncorhynchus (=Salmo) tshawytscha | Chinook salmon | Fishes | Endangered | Upper Columbia River spring-run ESU See 50 CFR 224.101 |
| Onychogalea fraenata | Brindled nail-tailed wallaby | Mammals | Endangered | Wherever found |
| Onychogalea lunata | Crescent nail-tailed wallaby | Mammals | Endangered | Wherever found |
| Orcinus orca | Killer whale | Mammals | Endangered | Southern Resident DPS See 50 CFR 224.101 |
| Oreomystis bairdi | Akikiki | Birds | Endangered | Wherever found |
| Oreophasis derbianus | Horned guan | Birds | Endangered | Wherever found |
| Oryx dammah | Scimitar-horned oryx | Mammals | Endangered | Wherever found |
| Oryx leucoryx | Arabian oryx | Mammals | Endangered | Wherever found |
| Oryzomys palustris natator | Silver rice rat | Mammals | Endangered | Lower FL Keys (west of Seven Mile Bridge) |
| Osteolaemus tetraspis osborni | Congo dwarf crocodile | Reptiles | Endangered | Wherever found |
| Osteolaemus tetraspis tetraspis | African dwarf crocodile | Reptiles | Endangered | Wherever found |
| Otus ireneae | Morden's owlet | Birds | Endangered | Wherever found |
| Otus magicus (=insularis) insularis | Seychelles scops owl | Birds | Endangered | Wherever found |
| Otus rutilus capnodes | Anjouan scops owl | Birds | Endangered | Wherever found |
| Ovis ammon | Argali | Mammals | Endangered | Wherever found except Kyrgyzstan, Mongolia, and Tajikistan |
| Ovis canadensis nelsoni | Peninsular bighorn sheep | Mammals | Endangered | U.S.A. (CA) Peninsular Ranges |
| Ovis canadensis sierrae | Sierra Nevada bighorn sheep | Mammals | Endangered | U.S.A. (CA) Sierra Nevada |
| Ovis musimon ophion | Urial | Mammals | Endangered | Wherever found |
| Ovis vignei vignei | Shapo | Mammals | Endangered | Wherever found |
| Ozotoceros bezoarticus | Pampas deer | Mammals | Endangered | Wherever found |
| Palmeria dolei | `Akohekohe (crested honeycreeper) | Birds | Endangered | Wherever found |
| Pangasianodon gigas | Thailand giant catfish | Fishes | Endangered | Wherever found |
| Pangasius sanitwongsei | Catfish | Fishes | Endangered | Wherever found |
| Pan paniscus | Pygmy chimpanzee | Mammals | Endangered | Wherever found |
| Panthalops hodgsonii | Tibetan antelope | Mammals | Endangered | Wherever found |
| Panthera leo ssp. leo | Lion | Mammals | Endangered | Wherever found |
| Panthera onca | Jaguar | Mammals | Endangered | Wherever found |
| Panthera pardus | Leopard | Mammals | Endangered | Wherever found, except where it is listed as Threatened |
| Panthera tigris | Tiger | Mammals | Endangered | Wherever found |
| Pan troglodytes | Chimpanzee | Mammals | Endangered | Wherever found |
| Papasula (=Sula) abbotti | Abbott's booby | Birds | Endangered | Wherever found |
| Parahyaena (=Hyaena) brunnea | Brown Hyena | Mammals | Endangered | Wherever found |
| Pardofelis (=Felis) marmorata | Marbled cat | Mammals | Endangered | Wherever found |
| Paroreomyza maculata | O`ahu `alauahio | Birds | Endangered | Wherever found |
| Patagioenas inornata wetmorei | Puerto Rican plain Pigeon | Birds | Endangered | Wherever found |
| Pedionomus torquatus | Plains wanderer (=collared-hemipode) | Birds | Endangered | Wherever found |
| Pekania pennanti | Fisher | Mammals | Endangered | Southern Sierra Nevada Distinct Population Segment |
| Penelope albipennis | White-winged guan | Birds | Endangered | Wherever found |
| Penelope perspicax | Cauca guan | Birds | Endangered | Wherever found |
| Pentalagus furnessi | Ryukyu rabbit | Mammals | Endangered | Japan (Ryukyu Islands) |
| Perameles bougainville | Barred bandicoot | Mammals | Endangered | Wherever found |
| Perameles eremiana | Desert bandicoot | Mammals | Endangered | Wherever found |
| Percina antesella | Amber darter | Fishes | Endangered | Wherever found |
| Percina jenkinsi | Conasauga logperch | Fishes | Endangered | Wherever found |
| Percina rex | Roanoke logperch | Fishes | Endangered | Wherever found |
| Perognathus longimembris pacificus | Pacific pocket mouse | Mammals | Endangered | Wherever found |
| Peromyscus gossypinus allapaticola | Key Largo cotton mouse | Mammals | Endangered | Wherever found |
| Peromyscus polionotus allophrys | Choctawhatchee beach mouse | Mammals | Endangered | Wherever found |
| Peromyscus polionotus ammobates | Alabama beach mouse | Mammals | Endangered | Wherever found |
| Peromyscus polionotus peninsularis | St. Andrew beach mouse | Mammals | Endangered | Wherever found |
| Peromyscus polionotus phasma | Anastasia Island beach mouse | Mammals | Endangered | Wherever found |
| Peromyscus polionotus trissyllepsis | Perdido Key beach mouse | Mammals | Endangered | Wherever found |
| Petrogale xanthopus | Yellow-footed rock wallaby | Mammals | Endangered | Wherever found |
| Petroica multicolor multicolor | Scarlet-breasted robin (flycatcher) | Birds | Endangered | Wherever found |
| Petroica traversi | Chatham Island robin | Birds | Endangered | Wherever found |
| Pezoporus wallicus | Ground parrot | Birds | Endangered | Wherever found |
| Phaenicophaeus pyrrhocephalus | Red-faced malkoha (cuckoo) | Birds | Endangered | Wherever found |
| Phaethornis malaris margarettae | Margaretta's hermit | Birds | Endangered | Wherever found |
| Pharomachrus mocinno ssp. mocinno | Resplendent quetzel | Birds | Endangered | Wherever found |
| Phelsuma edwardnewtoni | Day gecko | Reptiles | Endangered | Wherever found |
| Phelsuma guentheri | Round Island day gecko | Reptiles | Endangered | Wherever found |
| Phoca hispida saimensis | Saimaa seal | Mammals | Endangered | Wherever found |
| Phoca (=Pusa) hispida ladogensis | Ringed seal | Mammals | Endangered | Ladoga subspecies |
| Phocoena sinus | Cochito | Mammals | Endangered | Wherever found |
| Phoebastria (=Diomedea) albatrus | Short-tailed albatross | Birds | Endangered | Wherever found |
| Phoenicoparrus andinus | Andean flamingo | Birds | Endangered | Wherever found |
| Phrynops hogei | Brazilian sideneck turtle | Reptiles | Endangered | Wherever found |
| Physeter catodon (=macrocephalus) | Sperm whale | Mammals | Endangered | Wherever found |
| Phytotoma raimondii | Peruvian plantcutter | Birds | Endangered | Wherever found |
| Picathartes gymnocephalus | White-necked rockfowl | Birds | Endangered | Wherever found |
| Picathartes oreas | Grey-necked rockfowl | Birds | Endangered | Wherever found |
| Picoides borealis | Red-cockaded woodpecker | Birds | Endangered | Wherever found |
| Pionopsitta pileata | Red-capped parrot | Birds | Endangered | Wherever found |
| Pipile jacutinga | Black-fronted piping-guan | Birds | Endangered | Wherever found |
| Pipile pipile pipile | Trinidad white-headed curassow | Birds | Endangered | Wherever found |
| Pithecophaga jefferyi | Philippine eagle | Birds | Endangered | Wherever found |
| Pitta gurneyi | Gurney's pitta | Birds | Endangered | Wherever found |
| Pitta kochi | Koch's pitta | Birds | Endangered | Wherever found |
| Plagopterus argentissimus | Woundfin | Fishes | Endangered | Wherever found, except where listed as an experimental population |
| Planigale ingrami subtilissima | Little planigale | Mammals | Endangered | Wherever found |
| Planigale tenuirostris | Southern planigale | Mammals | Endangered | Wherever found |
| Platanista gangetica minor | South Asian River dolphin | Mammals | Endangered | Wherever found |
| Platysteira laticincta | Banded wattle-eye | Birds | Endangered | Wherever found |
| Plethodon neomexicanus | Jemez Mountains salamander | Amphibians | Endangered | Wherever found |
| Plethodon shenandoah | Shenandoah salamander | Amphibians | Endangered | Wherever found |
| Ploceus golandi | Clarke's weaver | Birds | Endangered | Wherever found |
| Podiceps taczanowskii | Junin grebe | Birds | Endangered | Wherever found |
| Podilymbus gigas | Atitlan grebe | Birds | Endangered | Wherever found |
| Podocnemis expansa | Tartaruga | Reptiles | Endangered | Wherever found |
| Podocnemis unifilis | Tracaja | Reptiles | Endangered | Wherever found |
| Poeciliopsis occidentalis | Gila topminnow (incl. Yaqui) | Fishes | Endangered | Wherever found |
| Polyplectron emphanum | Palawan peacock pheasant | Birds | Endangered | Wherever found |
| Pomarea nigra | Tahiti flycatcher | Birds | Endangered | Wherever found |
| Pongo pygmaeus | Orangutan | Mammals | Endangered | Wherever found |
| Prietella phreatophila | Mexican blindcat (catfish) | Fishes | Endangered | Wherever found |
| Priodontes maximus | Giant armadillo | Mammals | Endangered | Wherever found |
| Prionailurus (=Felis) bengalensis bengalensis | Leopard cat | Mammals | Endangered | Wherever found |
| Prionailurus (=Felis) bengalensis iriomotensis | Iriomote cat | Mammals | Endangered | Wherever found |
| Prionailurus (=Felis) planiceps | Flat-headed cat | Mammals | Endangered | Wherever found |
| Prionodon pardicolor | Spotted linsang | Mammals | Endangered | Wherever found |
| Pristis clavata | Dwarf sawfish | Fishes | Endangered | Wherever found |
| Pristis pectinata | Smalltooth sawfish | Fishes | Endangered | Non-US DPS - Smalltooth sawfish originating from non-US waters |
| Pristis pectinata | Smalltooth sawfish | Fishes | Endangered | US DPS - Smalltooth sawfish originating from U.S. waters. |
| Pristis pristis | Largetooth Sawfish | Fishes | Endangered | Wherever found |
| Pristis zijsron | Green sawfish | Fishes | Endangered | Wherever found |
| Probarbus jullieni | Ikan temoleh (minnow) | Fishes | Endangered | Wherever found |
| Procolobus (=Colobus) pennantii (=kirki) kirki | Zanzibar red colobus monkey | Mammals | Endangered | Wherever found |
| Procolobus (=Colobus) preussi (=badius p.) | Preuss' red colobus monkey | Mammals | Endangered | Wherever found |
| Procolobus (=Colobus) rufomitratus (=badius r.) | Tana River red colobus monkey | Mammals | Endangered | Wherever found |
| Propithecus spp. | Sifakas | Mammals | Endangered | Wherever found |
| Psammobates geometricus | Geometric turtle | Reptiles | Endangered | Wherever found |
| Psephotus chrysopterygius | Golden-shouldered parakeet | Birds | Endangered | Wherever found |
| Psephotus pulcherrimus | Paradise parakeet | Birds | Endangered | Wherever found |
| Pseudemydura umbrina | Short-necked or western swamp turtle | Reptiles | Endangered | Wherever found |
| Pseudemys alabamensis | Alabama red-bellied turtle | Reptiles | Endangered | Wherever found |
| Pseudemys rubriventris bangsi | Plymouth Redbelly Turtle = Plymouth Redbelly Cooter | Reptiles | Endangered | Wherever found |
| Pseudibis gigantea | Giant ibis | Birds | Endangered | Wherever found |
| Pseudobulweria macgillivrayi | Fiji petrel | Birds | Endangered | Wherever found |
| Pseudomys fieldi | Field's mouse | Mammals | Endangered | Wherever found |
| Pseudomys fumeus | Smoky mouse | Mammals | Endangered | Wherever found |
| Pseudomys gouldii | Gould's mouse | Mammals | Endangered | Wherever found |
| Pseudomys novaehollandiae | New Holland mouse | Mammals | Endangered | Wherever found |
| Pseudomys occidentalis | Western mouse | Mammals | Endangered | Wherever found |
| Pseudomys praeconis | Shark Bay mouse | Mammals | Endangered | Wherever found |
| Pseudomys shortridgei | Shortridge's mouse | Mammals | Endangered | Wherever found |
| Pseudonestor xanthophrys | Maui parrotbill (Kiwikiu) | Birds | Endangered | Wherever found |
| Pseudorca crassidens | false killer whale | Mammals | Endangered | Main Hawaiian Islands Insular DPS See 50 CFR 224.101 |
| Psittacula echo | Mauritius parakeet | Birds | Endangered | Wherever found |
| Psittirostra psittacea | `O`u (honeycreeper) | Birds | Endangered | Wherever found |
| Psophodes nigrogularis | Western whipbird | Birds | Endangered | Wherever found |
| Pterodroma aterrima | Mascarene black petrel | Birds | Endangered | Wherever found |
| Pterodroma axillaris | Chatham Island petrel | Birds | Endangered | Wherever found |
| Pterodroma cahow | Bermuda petrel | Birds | Endangered | Wherever found |
| Pterodroma hasitata | Black-capped Petrel | Birds | Endangered | Wherever found |
| Pterodroma madeira | Freira | Birds | Endangered | Wherever found |
| Pterodroma magentae | Magenta petrel | Birds | Endangered | Wherever found |
| Pterodroma sandwichensis | Hawaiian petrel | Birds | Endangered | Wherever found |
| Pteronura brasiliensis | Giant otter | Mammals | Endangered | South America |
| Pteropus rodricensis | Rodrigues fruit bat (=flying fox) | Mammals | Endangered | Wherever found |
| Ptychocheilus lucius | Colorado pikeminnow | Fishes | Endangered | Wherever found, except where listed as an experimental population |
| Pudu pudu | Pudu | Mammals | Endangered | Wherever found |
| Puma (=Felis) concolor coryi | Florida panther | Mammals | Endangered | Wherever found |
| Puma (=Felis) concolor costaricensis | Costa Rican puma | Mammals | Endangered | Wherever found |
| Puma yagouaroundi cacomitli | Gulf Coast jaguarundi | Mammals | Endangered | Wherever found |
| Puma yagouaroundi tolteca | Sinaloan jaguarundi | Mammals | Endangered | Wherever found |
| Pygathrix nemaeus | Douc langur | Mammals | Endangered | Wherever found |
| Pyriglena atra | Fringe-backed fire-eye | Birds | Endangered | Wherever found |
| Pyrrhula pyrrhula murina | Sao Miguel bullfinch (finch) | Birds | Endangered | Wherever found |
| Pyrrhura cruentata | Blue-throated (=ochre-marked) parakeet | Birds | Endangered | Wherever found |
| Python molurus molurus | Indian python | Reptiles | Endangered | Wherever found |
| Quisicalus palustris | Slender-billed Grackle | Birds | Endangered | Wherever found |
| Rallus obsoletus levipes | Light-footed Ridgway''s rail | Birds | Endangered | Wherever found |
| Rallus obsoletus obsoletus | California Ridgway''s rail | Birds | Endangered | Wherever found |
| Rallus obsoletus yumanensis | Yuma Ridgway's rail | Birds | Endangered | Wherever found |
| Rallus pectoralis muelleri | Aukland Island rail | Birds | Endangered | Wherever found |
| Ramphocinclus brachyurus | White-breasted thrasher | Birds | Endangered | Wherever found |
| Ramphodon (=Glaucis) dohrnii | Hook-billed hermit (hummingbird) | Birds | Endangered | Wherever found |
| Rana boylii | Foothill yellow-legged frog | Amphibians | Endangered | California, Coast Range from Monterey County south to Los Angeles County |
| Rana boylii | Foothill yellow-legged frog | Amphibians | Endangered | California, Sierra Nevada Mountains south of American River sub-basin south to Transverse Range, Kern County |
| Rana muscosa | Mountain yellow-legged frog | Amphibians | Endangered | U.S.A., northern California |
| Rana muscosa | Mountain yellow-legged frog | Amphibians | Endangered | U.S.A., southern California |
| Rana sevosa | dusky gopher frog | Amphibians | Endangered | Wherever found |
| Rana sierrae | Sierra Nevada Yellow-legged Frog | Amphibians | Endangered | Wherever found |
| Rangifer tarandus ssp. caribou | Southern Mountain Caribou DPS | Mammals | Endangered | U.S.A. (wherever found), Canada (southeastern British Columbia) |
| Rangifer tarandus ssp. groenlandicus x pearyi | Dolphin and Union caribou | Mammals | Endangered | Wherever found |
| Reithrodontomys raviventris | Salt marsh harvest mouse | Mammals | Endangered | wherever found |
| Rhea (=Pterocnemia) pennata | Lesser rhea (incl. Darwin's) | Birds | Endangered | Wherever found |
| Rhinichthys osculus lethoporus | Independence Valley speckled dace | Fishes | Endangered | Wherever found |
| Rhinichthys osculus nevadensis | Ash Meadows speckled dace | Fishes | Endangered | Wherever found |
| Rhinichthys osculus oligoporus | Clover Valley speckled dace | Fishes | Endangered | Wherever found |
| Rhinichthys osculus thermalis | Kendall Warm Springs dace | Fishes | Endangered | Wherever found |
| Rhinobatos horkelii | Brazilian guitarfish | Fishes | Endangered | Entire |
| Rhinoceros sondaicus | Javan rhinoceros | Mammals | Endangered | Sikkim, Thailand, Malaysia, Indonesia, Indochina, Burma, Bangladesh |
| Rhinoceros unicornis | Great Indian rhinoceros | Mammals | Endangered | Nepal, India |
| Rhinopithecus avunculus | Tonkin snub-nosed monkey | Mammals | Endangered | Wherever found |
| Rhinopithecus bieti | Yunnan snub-nosed monkey | Mammals | Endangered | Wherever found |
| Rhinopithecus brelichi | Guizhou snub-nosed monkey | Mammals | Endangered | Wherever found |
| Rhinopithecus roxellana | Sichuan snub-nosed monkey | Mammals | Endangered | Wherever found |
| Rhinoptilus bitorquatus | Jerdon's courser | Birds | Endangered | Wherever found |
| Rhodonessa caryophyllacea | Pink-headed duck | Birds | Endangered | Wherever found |
| Rhynchopsitta pachyrhyncha | Thick-billed parrot | Birds | Endangered | Wherever found |
| Rhynochetos jubatus | Kagu | Birds | Endangered | Wherever found |
| Romerolagus diazi | Volcano rabbit | Mammals | Endangered | Mexico |
| Rostrhamus sociabilis plumbeus | Everglade snail kite | Birds | Endangered | Wherever found |
| Rukia longirostra | Ponape greater white-eye | Birds | Endangered | Wherever found |
| Rupicapra rupicapra ornata | Apennine chamois | Mammals | Endangered | Wherever found |
| Saguinus bicolor | Pied tamarin | Mammals | Endangered | Wherever found |
| Saguinus oedipus | Cotton-top tamarin | Mammals | Endangered | Wherever found |
| Saiga tatarica mongolica | Mongolian saiga (antelope) | Mammals | Endangered | Mongolia |
| Saimiri oerstedii | Red-backed squirrel monkey | Mammals | Endangered | Wherever found |
| Salmo platycephalus | Ala balik (trout) | Fishes | Endangered | Wherever found |
| Salmo salar | Atlantic salmon | Fishes | Endangered | Gulf of Maine DPS - See 50 CFR 224.101 |
| Sauromalus varius | San Esteban Island chuckwalla | Reptiles | Endangered | Wherever found |
| Scaphirhynchus albus | Pallid sturgeon | Fishes | Endangered | Wherever found |
| Scaphirhynchus suttkusi | Alabama sturgeon | Fishes | Endangered | Wherever found |
| Sceloporus arenicolus | Dunes sagebrush lizard | Reptiles | Endangered | Wherever found |
| Scleropages formosus | Asian bonytongue | Fishes | Endangered | Wherever found |
| Sebastes paucispinis | Bocaccio | Fishes | Endangered | Puget Sound-Georgia Basin DPS See 50 CFR 224.101 |
| Semnopithecus (=Presbytis) entellus | Gray (=entellus) langur | Mammals | Endangered | Wherever found |
| Setonix brachyurus | Quokka | Mammals | Endangered | Wherever found |
| Setophaga chrysoparia | golden-cheeked warbler | Birds | Endangered | Wherever found |
| Sitta ledanti | Algerian nuthatch | Birds | Endangered | Wherever found |
| Sminthopsis longicaudata | Long-tailed marsupial-mouse | Mammals | Endangered | Wherever found |
| Sminthopsis psammophila | Large desert marsupial-mouse | Mammals | Endangered | Wherever found |
| Solenodon cubanus | Cuban solenodon | Mammals | Endangered | Wherever found |
| Solenodon paradoxus | Haitian solenodon | Mammals | Endangered | Wherever found |
| Sorex ornatus relictus | Buena Vista Lake ornate Shrew | Mammals | Endangered | Wherever found |
| Sousa teuszil | Atlantic humpback dolphin | Mammals | Endangered | Entire |
| Speoplatyrhinus poulsoni | Alabama cavefish | Fishes | Endangered | Wherever found |
| Spheniscus demersus | African penguin | Birds | Endangered | Wherever found |
| Spheniscus mendiculus | Galapagos penguin | Birds | Endangered | Wherever found |
| Sphenodon guntheri | Brother's Island tuatara | Reptiles | Endangered | Wherever found |
| Sphenodon punctatus | Tuatara | Reptiles | Endangered | Wherever found |
| Sphyrna lewini | Scalloped Hammerhead Shark | Fishes | Endangered | Eastern Atlantic DPS |
| Sphyrna lewini | Scalloped Hammerhead Shark | Fishes | Endangered | Eastern Pacific DPS |
| Squatina aculeata | Sawback angelshark | Fishes | Endangered | Entire |
| Squatina argentina | Argentine angelshark | Fishes | Endangered | Entire |
| Squatina guggenheim | Spiny angelshark | Fishes | Endangered | Entire |
| Squatina oculata | Smoothback angelshark | Fishes | Endangered | Entire |
| Squatina squatina | Angel shark | Fishes | Endangered | Entire |
| Sterna dougallii dougallii | Roseate tern | Birds | Endangered | U.S.A. (Atlantic Coast south to NC), Canada (Newf., N.S, Que.), Bermuda |
| Sternula antillarum browni | California least tern | Birds | Endangered | Wherever found |
| Streptopelia picturata rostrata | Seychelles turtle dove | Birds | Endangered | Wherever found |
| Strigops habroptilus | Kakapo | Birds | Endangered | Wherever found |
| Struthio camelus spatzi | West African ostrich | Birds | Endangered | Wherever found |
| Struthio camelus syriacus | Arabian ostrich | Birds | Endangered | Wherever found |
| Sus salvanius | Pygmy hog | Mammals | Endangered | Wherever found |
| Sylvilagus bachmani riparius | Riparian brush rabbit | Mammals | Endangered | Wherever found |
| Sylvilagus palustris hefneri | Lower Keys marsh rabbit | Mammals | Endangered | Wherever found |
| Symphalangus syndactylus | Siamang | Mammals | Endangered | Wherever found |
| Syrmaticus ellioti | Elliot's pheasant | Birds | Endangered | Wherever found |
| Syrmaticus humaie | Bar-tailed pheasant | Birds | Endangered | Wherever found |
| Syrmaticus mikado | Mikado pheasant | Birds | Endangered | Wherever found |
| Tachybaptus rufolavatus | Alaotra Grebe | Birds | Endangered | Wherever found |
| Tamiasciurus fremonti grahamensis | Mount Graham red squirrel | Mammals | Endangered | Wherever found |
| Tanakia tanago | Miyako tango (=Toyko bitterling) | Fishes | Endangered | Wherever found |
| Tapirus bairdii | Central American tapir | Mammals | Endangered | Wherever found |
| Tapirus indicus | Asian tapir | Mammals | Endangered | Wherever found |
| Tapirus pinchaque | Mountain tapir | Mammals | Endangered | Wherever found |
| Tapirus terrestris | South American (=Brazilian) tapir | Mammals | Endangered | Wherever found |
| Tauraco bannermani | Bannerman's turaco | Birds | Endangered | Wherever found |
| Taurotragus derbianus derbianus | Western giant eland | Mammals | Endangered | Wherever found |
| Telespiza cantans | Laysan finch | Birds | Endangered | Wherever found |
| Telespiza ultima | Nihoa finch | Birds | Endangered | Wherever found |
| Terpsiphone corvina | Seychelles paradise flycatcher | Birds | Endangered | Wherever found |
| Terrapene coahuila | Aquatic box turtle | Reptiles | Endangered | Wherever found |
| Tetrao urogallus cantabricus | Cantabrian capercaillie | Birds | Endangered | Wherever found |
| Thamnophis sirtalis tetrataenia | San Francisco garter snake | Reptiles | Endangered | Wherever found |
| Thinornis novaeseelandiae | New Zealand shore plover | Birds | Endangered | Wherever found |
| Thylacinus cynocephalus | Tasmanian tiger | Mammals | Endangered | Wherever found |
| Tiaroga cobitis | Loach minnow | Fishes | Endangered | Wherever found |
| Tinamus solitarius | Solitary tinamou | Birds | Endangered | Wherever found |
| Todiramphus cinnamominus | Guam kingfisher | Birds | Endangered | Wherever found |
| Tomistoma schlegelii | Tomistoma | Reptiles | Endangered | Wherever found |
| Trachemys scripta callirostris | South American red-lined turtle | Reptiles | Endangered | Wherever found |
| Trachemys stejnegeri malonei | Inagua Island turtle | Reptiles | Endangered | Wherever found |
| Trachemys terrapen | Cat Island turtle | Reptiles | Endangered | Cat Island in the Bahamas |
| Trachypithecus (=Presbytis) francoisi | Francois' langur | Mammals | Endangered | Wherever found |
| Trachypithecus (=Presbytis) geei | Golden langur | Mammals | Endangered | Wherever found |
| Trachypithecus (=Presbytis) pileatus | Capped Langur | Mammals | Endangered | Wherever found |
| Tragopan blythii | Blyth's tragopan pheasant | Birds | Endangered | Wherever found |
| Tragopan caboti | Cabot's tragopan pheasant | Birds | Endangered | Wherever found |
| Tragopan melanocephalus | Western tragopan pheasant | Birds | Endangered | Wherever found |
| Trichechus inunguis | Amazonian manatee | Mammals | Endangered | Wherever found |
| Trichocichla rufa | Long-legged warbler | Birds | Endangered | Wherever found |
| Tringa guttifer | Nordmann's greenshank | Birds | Endangered | Wherever found |
| Trionyx ater | Cuatro Cienegas softshell turtle | Reptiles | Endangered | Wherever found |
| Trionyx gangeticus | Indian softshell turtle | Reptiles | Endangered | Wherever found |
| Trionyx hurum | Peacock softshell turtle | Reptiles | Endangered | Wherever found |
| Trionyx nigricans | Black softshell turtle | Reptiles | Endangered | Wherever found |
| Troglodytes aedon guadeloupensis | Guadeloupe house wren | Birds | Endangered | Wherever found |
| Troglodytes aedon mesoleucus | St. Lucia house wren | Birds | Endangered | Wherever found |
| Turdus olivaceus helleri | Taita thrush | Birds | Endangered | Wherever found |
| Turnagra capensis | New Zealand thrush (wattlebird) | Birds | Endangered | Wherever found |
| Tympanuchus cupido attwateri | Attwater's greater prairie-chicken | Birds | Endangered | Wherever found |
| Tympanuchus pallidicinctus | Lesser prairie-chicken | Birds | Endangered | Southern DPS: All lesser prairie-chickens south of a line starting at 37.9868 N, 105.0133 W, and ending at 31.7351 N, 98.3773 W, NAD83 |
| Tyto soumagnei | Madagascar red owl | Birds | Endangered | Wherever found |
| Uncia (=Panthera) uncia | Snow leopard | Mammals | Endangered | Wherever found |
| Uratelornis chimaera | Long-tailed ground roller | Birds | Endangered | Wherever found |
| Ursus arctos arctos | Brown bear | Mammals | Endangered | Italy |
| Ursus arctos pruinosus | Brown bear | Mammals | Endangered | Wherever found |
| Ursus thibetanus gedrosianus | Baluchistan bear | Mammals | Endangered | Wherever found |
| Varanus bengalensis | Indian (=Bengal) monitor | Reptiles | Endangered | Wherever found |
| Varanus flavescens | Yellow monitor | Reptiles | Endangered | Wherever found |
| Varanus griseus | Desert monitor | Reptiles | Endangered | Wherever found |
| Varanus komodoensis | Komodo Island monitor | Reptiles | Endangered | Wherever found |
| Vicugna vicugna | Vicuna | Mammals | Endangered | Ecuador (DPS) |
| Vipera latifii | Lar Valley viper | Reptiles | Endangered | Wherever found |
| Vireo bellii pusillus | Least Bell's vireo | Birds | Endangered | Wherever found |
| Viverra civettina (=megaspila c.) | Malabar large-spotted civet | Mammals | Endangered | Wherever found |
| Vulpes macrotis mutica | San Joaquin kit fox | Mammals | Endangered | wherever found |
| Vulpes velox hebes | Northern swift fox | Mammals | Endangered | Canada |
| Vulpes vulpes necator | Sierra Nevada red fox | Mammals | Endangered | Sierra Nevada DPS |
| Vultur gryphus | Andean condor | Birds | Endangered | Wherever found |
| Wyulda squamicaudata | Scaly-tailed possum | Mammals | Endangered | Wherever found |
| Xenicus longipes | New Zealand bushwren | Birds | Endangered | Wherever found |
| Xeromys myoides | False water rat | Mammals | Endangered | Wherever found |
| Xipholena atropurpurea | White-winged cotinga | Birds | Endangered | Wherever found |
| Xyrauchen texanus | Razorback sucker | Fishes | Endangered | Wherever found |
| Zapus hudsonius luteus | New Mexico meadow jumping mouse | Mammals | Endangered | Wherever found |
| Zosterops albogularis | Norfolk Island white-eye | Birds | Endangered | Wherever found |
| Zosterops modesta | Seychelles white-eye | Birds | Endangered | Wherever found |
| Zosterops rotensis | Rota bridled white-eye | Birds | Endangered | Wherever found |
| Zyzomys pedunculatus | Australian native mouse | Mammals | Endangered | Wherever found |