H
- Habia atrimaxillaris — Black-cheeked Ant-tanager
- Habromys simulatus — Jico Deer Mouse
- Hacrochlamys lineolatus
- Haematopinus oliveri — Pygmy Hog Sucking Louse
- Haematopus chathamensis — Chatham Island Oystercatcher
- Haliaeetus vociferoides — Madagascar Fish-eagle
- Haliotis cracherodii — Black Abalone
- Haliotis kamtschatkana — Northern abalone, Pinto abalone
- Hampala lopezi
- Hapalemur aureus — Golden Bamboo Lemur, Golden Lemur
- Hapalemur simus — Broad-nosed Gentle Lemur, Greater Bamboo Lemur
- Hapalopsittaca fuertesi — Fuertes's Parrot
- Haplochromis annectidens
- Haplochromis argenteus
- Haplochromis barbarae
- Haplochromis bayoni
- Haplochromis brownae
- Haplochromis cavifrons
- Haplochromis chromogynos
- Haplochromis cryptodon
- Haplochromis cyaneus
- Haplochromis desfontainii
- Haplochromis erythromaculatus
- Haplochromis flaviijosephi
- Haplochromis flavus
- Haplochromis guiarti
- Haplochromis heusinkveldi
- Haplochromis howesi
- Haplochromis latifasciata
- Haplochromis maculipinna
- Haplochromis megalops
- Haplochromis melanopterus
- Haplochromis mento
- Haplochromis microdon
- Haplochromis phytophagus
- Haplochromis piceatus
- Haplochromis plagiodon
- Haplochromis plagiostoma
- Haplochromis simpsoni
- Haplochromis sp. nov. 'Amboseli'
- Haplochromis sp. nov. 'ruby'
- Haplochromis spekii
- Haplochromis venator
- Haplochromis victorianus
- Haplochromis worthingtoni
- Harmogenanina implicata
- Harpyhaliaetus coronatus — Crowned Eagle
- Hauffenia kerschneri
- Hauffenia wienerwaldensis
- Heleophryne hewitti — Hewitt's Ghost Frog
- Heleophryne rosei — Rose's Ghost Frog, Table Mountain Ghost Frog
- Heliangelus regalis — Royal Sunangel
- Helicina rostrata
- Heliconius nattereri — Natterer's Longwing
- Helicostyla smargadina
- Heliogomphus ceylonicus
- Heliogomphus lyratus
- Heliogomphus nietneri
- Helix ceratina
- Helix texta
- Helminthoglypta callistoderma — Kern shoulderband
- Helminthoglypta walkeriana — Banded dune snail, Morro shoulderband
- Hemicordulia ogasawarensis
- Hemicycla saulcyi
- Hemignathus lucidus — Nukupu'u
- Hemignathus munroi — 'Akiapola'au
- Hemigrammocapoeta kemali
- Hemiphractus johnsoni
- Hemisaga elongata
- Hemistena lata — Cracking Pearlymussel
- Hemistoma beaumonti
- Hemistoma pusillior
- Hemistoma whiteleggei
- Hemitragus hylocrius — Nilgiri Tahr
- Hemitragus jayakari — Arabian Tahr
- Hemitriakis leucoperiptera — Whitefin topeshark
- Hemitriccus kaempferi — Kaempfer's Tody-tyrant
- Heosemys depressa — Arakan Forest Turtle
- Heosemys leytensis — Philippine Pond Turtle
- Heosemys spinosa — Spiny Terrapin, Spiny Turtle, Sunburst Turtle
- Herpestes palustris — Bengal Mongoose, Marsh Mongoose
- Herpsilochmus parkeri — Ash-throated Antwren
- Hesperoptenus doriae — False Serotine Bat
- Heterocyclus perroquini
- Heterocyclus petiti
- Heteroglaux blewitti — Forest Owlet
- Heteromirafra archeri — Archer's Lark
- Heteromys nelsoni — Nelson's Spiny Pocket Mouse
- Hexaprotodon liberiensis — Pygmy Hippopotamus
- Hieremys annandalii — Yellow-headed Temple Turtle
- Hierophis cypriensis — Cyprus Whip Snake
- Himantopus novaezelandiae — Black Stilt
- Himantura fluviatilis — Ganges stingray
- Himantura oxyrhyncha — Marbled freshwater stingray
- Himantura signifer — White-edge freshwater whipray
- Hippocamelus bisulcus — Chilean Guemal, Chilean Huemul, South Andean Deer, South Andean Huemul
- Hippocampus capensis — Cape seahorse, Knysna seahorse
- Hippoglossus hippoglossus — Atlantic halibut
- Hipposideros durgadasi — Khajuria's Leaf-nosed Bat
- Hipposideros hypophyllus — Kolar Leaf-nosed Bat
- Hipposideros lamottei — Lamotte's Roundleaf Bat
- Hipposideros marisae — Aellen's Roundleaf Bat
- Hipposideros nequam — Malayan Roundleaf Bat
- Hipposideros turpis — Lesser Great Leaf-nosed Bat, Lesser Roundleaf Bat
- Hirasea acutissima
- Hirasea chichijimana
- Hirasea diplomphalus
- Hirasea insignis
- Hirasea operculina
- Hirinaba curytibana
- Hirthia littorina
- Holoaden bradei
- Hoplophryne rogersi — Usambara Blue-bellied Frog
- Houbaropsis bengalensis — Bengal Florican
- Hubbsina turneri
- Hucho hucho — Danube Salmon, Huchen
- Hucho perryi — Japanese Huchen, Sakhalin Taimen, Sea-run Taimen, Stringfish
- Humblotia flavirostris — Grand Comoro Flycatcher
- Huso dauricus — Kaluga
- Huso huso — Beluga, European Sturgeon, Giant Sturgeon, Great Sturgeon
- Hyalinobatrachium cardiacalyptum
- Hyalinobatrachium crybetes
- Hyalinobatrachium esmeralda
- Hyalinobatrachium guairarepanensis
- Hyalinobatrachium pallidum
- Hyalinobatrachium pellucidum
- Hybognathus amarus — Rio Grande Minnow
- Hybomys basilii — Bioko Hybomys, Father Basilio's Striped Mouse
- Hybomys eisentrauti — Eisentraut's Hybomys, Eisentraut's Striped Mouse
- Hydrotarsus compunctus
- Hydrotarsus pilosus
- Hyetornis rufigularis — Bay-breasted Cuckoo
- Hyla bocourti
- Hyla chlorostea
- Hylaeothemis fruhstorferi
- Hyliota usambara — Usambara Hyliota
- Hylobates moloch — Silvery Gibbon
- Hylomantis lemur
- Hylomys hainanensis — Hainan Gymnure
- Hylomys parvus — Dwarf Gymnure
- Hylomyscus baeri — Baer's Hylomyscus, Baer's Wood Mouse
- Hylomyscus grandis — Mt Oku Hylomyscus
- Hylopetes alboniger — Particolored Flying Squirrel
- Hylopetes sipora — Sipora Flying Squirrel
- Hylopetes winstoni — Sumatran Flying Squirrel
- Hyloscirtus charazani
- Hyloscirtus colymba
- Hyloscirtus denticulentus
- Hyloscirtus lynchi
- Hyloscirtus pantostictus
- Hyloscirtus piceigularis
- Hyloscirtus psarolaimus
- Hyloscirtus ptychodactylus
- Hyloscirtus simmonsi
- Hyloscirtus staufferorum
- Hymenolaimus malacorhynchos — Blue Duck
- Hynobius abei — Abe's Salamander
- Hynobius amjiensis
- Hynobius chinensis
- Hynobius dunni — Oita Salamander
- Hynobius formosanus
- Hynobius hidamontanus — Hakuba Salamander, Japanese Mountain Salamander
- Hynobius okiensis — Oki Salamander
- Hynobius sonani
- Hynobius takedai — Hokuriku Salamander
- Hynobius yunanicus
- Hyperolius bobirensis
- Hyperolius dintelmanni
- Hyperolius kihangensis
- Hyperolius leleupi
- Hyperolius leucotaenius
- Hyperolius nienokouensis
- Hyperolius nimbae
- Hyperolius pickersgilli — Pickersgill's Reed Frog
- Hyperolius rubrovermiculatus
- Hyperolius tannerorum
- Hyperolius thomensis
- Hyperolius torrentis
- Hypogeomys antimena — Malagasy Giant Rat
- Hypolestes clara — Jamaican Hypolestes
- Hypomesus transpacificus — Delta smelt
- Hypopyrrhus pyrohypogaster — Red-bellied Grackle
- Hypsiboas cymbalum
- Hypsugo anthonyi — Anthony's Pipistrelle
- Hypsugo joffrei — Joffre's Pipistrelle
Read more about this topic: IUCN Red List Endangered Animal Species