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- Dactylopsila tatei — Fergusson Island Striped Possum, Tate's Triok
- Dancea rodriguezensis
- Danio pathirana — Barred Danio
- Dasyatis laosensis — Mekong freshwater stingray
- Dasycercus hillieri — Hillier's Mulgara
- Dasycrotapha speciosa — Flame-templed Babbler
- Dasyornis brachypterus — Eastern Bristlebird
- Dasyprocta coibae — Coiban Agouti
- Dasyprocta ruatanica — Ruatan Island Agouti
- Daubentonia madagascariensis — Aye-aye
- Delanymys brooksi — Delany's Mouse, Delany's Swamp Mouse
- Deltistes luxatus — Lost River Sucker
- Dendrobates abditus
- Dendrobates arboreus — Polkadot Poison Frog
- Dendrobates bombetes — Cauca Poison Frog
- Dendrobates lehmanni — Lehmann's Poison Frog, Red-banded Poison Frog
- Dendrobates mysteriosus — Marañón Poison Frog
- Dendrobates sirensis
- Dendrobates speciosus — Splendid Poison Frog
- Dendrobates steyermarki
- Dendrobates virolensis
- Dendrocopos noguchii — Okinawa Woodpecker
- Dendroica chrysoparia — Golden-cheeked Warbler
- Dendrolagus goodfellowi — Goodfellow's Tree-kangaroo, Ornate Tree-kangaroo
- Dendrolagus matschiei — Huon Tree-kangaroo, Matschie's Tree-kangaroo
- Dendrolagus scottae — Scott's Tree-kangaroo, Tenkile Tree Kangaroo
- Dendromus kahuziensis — Mt. Kahuzi Climbing Mouse
- Dendrophryniscus carvalhoi
- Dendropsophus amicorum
- Dendropsophus gryllatus
- Dendropsophus meridensis
- Dendrotriton bromeliacius
- Dendrotriton cuchumatanus
- Dendrotriton rabbi
- Dendrotriton sanctibarbarus
- Dermatemys mawii — Central American river turtle, Mesoamerican River Turtle
- Dermochelys coriacea — Leatherback, Leathery Turtle, Luth, Trunkback Turtle
- Deronectes aljibensis
- Desmomys yaldeni — Yalden's Desmomys
- Dexteria floridana — Florida Fairy Shrimp
- Dicaeum quadricolor — Cebu Flowerpecker
- Dicerorhinus sumatrensis — Sumatran Rhinoceros
- Diceros bicornis — Black Rhinoceros, Hook-lipped Rhinoceros
- Dicrostonyx vinogradovi — Wrangel Lemming
- Dicrurus fuscipennis — Grand Comoro Drongo
- Dicrurus waldenii — Mayotte Drongo
- Didunculus strigirostris — Tooth-billed Pigeon
- Didynamipus sjostedti
- Diglossa gloriosissima — Chestnut-bellied Flower-piercer
- Diglossa venezuelensis — Venezuelan Flowerpiercer
- Dinomys branickii — Pacarana
- Diomedea amsterdamensis — Amsterdam Albatross
- Diomedea dabbenena — Tristan Albatross
- Diomedea sanfordi — Northern Royal Albatross
- Dionda mandibularis
- Diplodon dunkerianus
- Diplodon fontaineanus
- Diploglossus montisserrati — Montserrat Galliwasp
- Diplommatina cacuminulus
- Diplommatina madaiensis
- Diplomystes chilensis
- Diplothrix legatus — Ryukyu Long-tailed Giant Rat, Ryūkyū Rat
- Dipodomys gravipes — San Quintin Kangaroo Rat
- Dipodomys ingens — Giant Kangaroo Rat
- Dipodomys insularis — San Jose Island Kangaroo Rat
- Dipodomys margaritae — Margarita Island Kangaroo Rat
- Dipturus batis — Common skate, Blue skate, Flapper skate, Grey skate
- Dipturus laevis — Barndoor Skate
- Dipturus sp. nov. L — Maugean skate
- Disconaias salinasensis — Salina mucket
- Discula bulweri
- Discula tabellata — Madeiran land snail
- Discula testudinalis — Madeiran land snail
- Discula tetrica
- Discus guerinianus — Madeiran land snail
- Disparoneura ramajana
- Dobsonia beauforti — Beaufort's Naked-backed Fruit Bat
- Dobsonia chapmani — Negros Naked-backed Fruit Bat, Philippine Bare-backed Fruit Bat
- Dolapex amiculus
- Doratogonus furculifer — Badplaas Black Millipede
- Doratogonus infragilis — Strong Black Millipede
- Doratogonus major — Major Black Millipede
- Doratogonus minor — Minor Black Millipede
- Doratogonus rubipodus — Ruby-legged Black Millipede
- Doratogonus septentrionalis — Northern Black Millipede
- Doratogonus zuluensis — Zululand Black Millipede
- Dorcopsis atrata — Black Dorcopsis Wallaby, Black Dorcopsis, Black Forest-wallaby
- Draparnaudia anniae
- Draparnaudia subnecata
- Drepanosticta adami
- Drepanosticta austeni
- Drepanosticta hilaris
- Drepanosticta montana
- Drepanosticta submontana
- Dromus dromas — Dromedary naiad, Dromedary pearly mussel
- Dryococelus australis — Land Lobster, Lord Howe Island Phasmid, Lord Howe Island Stick-insect
- Dryomys sichuanensis — Chinese Dormouse
- Ducula aurorae — Polynesian Imperial-pigeon
- Ducula cineracea — Timor Imperial-pigeon
- Ducula galeata — Marquesan Imperial-pigeon
- Duellmanohyla chamulae
- Duellmanohyla ignicolor
- Duellmanohyla lythrodes
- Duellmanohyla salvavida
- Duellmanohyla soralia
- Duellmanohyla uranochroa
- Dupontia perlucida
Read more about this topic: IUCN Red List Endangered Animal Species