ARKive's most wanted species listed alphabetically by scientific name
| Scientific name | Common name | Status |
|---|---|---|
| Acanthodactylus spinicauda | Doumergue's Fringe-fingered Lizard | CR |
| Acanthometropus pecatonica | Pecatonica River Mayfly | EX |
| Acanthomyops murphii | VU | |
| Acanthus latisepalus | VU | |
| Accipiter brachyurus | New Britain Sparrowhawk | VU |
| Accipiter butleri | Nicobar Sparrowhawk | VU |
| Accipiter gundlachi | Gundlach's Hawk | EN |
| Accipiter imitator | Imitator Sparrowhawk | VU |
| Accipiter luteoschistaceus | Slaty-mantled Sparrowhawk | VU |
| Accipiter princeps | New Britain goshawk | VU |
| Acer duplicatoserratum | VU | |
| Acer hainanense | CR | |
| Acer leipoense | CR | |
| Acer miaotaiense | VU | |
| Acerodon humilis | Talaud Fruit Bat | EN |
| Acerodon leucotis | Palawan Fruit Bat | VU |
| Acerodon mackloti | Sunda Fruit Bat | VU |
| Achatinella caesia | EX | |
| Achatinella cestus | CR | |
| Achatinella curta | CR | |
| Achatinella decora | EX | |
| Achatinella dimorpha | EX | |
| Achatinella elegans | EX | |
| Achatinella juddii | EX | |
| Achatinella juncea | EX | |
| Achatinella lehuiensis | EX | |
| Achatinella leucorrhaphe | CR | |
| Achatinella papyracea | EX | |
| Achatinella phaeozona | CR | |
| Achatinella pupukanioe | CR | |
| Achatinella spaldingi | EX | |
| Achatinella stewartii | CR | |
| Achatinella swiftii | CR | |
| Achatinella thaanumi | EX | |
| Achatinella turgida | CR | |
| Achatinella valida | EX | |
| Achatinella viridans | CR | |
| Acheilognathus elongatus | Elongate Bitterling | CR |
| Acheilognathus longipinnis | Itasenpara Bitterling | VU |
| Achoerodus gouldii | Western Blue Wrasse | VU |
| Achondrostoma salmantinum | EN | |
| Achyranthes atollensis | Hawaii Chaff Flower | EX |
| Achyranthes mutica | Blunt Chaff Flower | CR |
| Achyrocline hallii | VU | |
| Aciagrion fasciculare | EN | |
| Acicula multilineata | VU | |
| Acicula norrisi | VU | |
| Acicula palaestinensis | VU | |
| Acidocroton gentryi | EN | |
| Acilius duvergeri | VU |