ARKive's most wanted species listed alphabetically by scientific name
| Scientific name | Common name | Status |
|---|---|---|
| Acioa cinerea | CR | |
| Acioa dichotoma | CR | |
| Aciotis aristellata | EN | |
| Aciotis asplundii | VU | |
| Acipenser mikadoi | Sakhalin Sturgeon | CR |
| Acipenser schrenckii | Amur Sturgeon | CR |
| Acis nicaeensis | EN | |
| Acmella leucantha | VU | |
| Aconitum corsicum | VU | |
| Acontophiops lineatus | Woodbush Legless Skink | VU |
| Acridocarpus monodii | EN | |
| Acrobates pygmaeus | Pygmy Gliding Possum | LC |
| Acrocephalus familiaris | Nihoa Reed-warbler | CR |
| Acrocephalus rehsei | Nauru Reed-warbler | VU |
| Acrocephalus rimatarae | Rimatara Reed-Warbler | VU |
| Acrocephalus sorghophilus | Streaked Reed-Warbler | VU |
| Acrochordonichthys chamaeleon | VU | |
| Acrodipsas illidgei | Illidge's Ant-blue | EN |
| Acrolophitus pulchellus | Idaho Point-headed Grasshopper | VU |
| Acroloxus improvisus | VU | |
| Acroloxus macedonicus | CR | |
| Acropogon aoupiniensis | VU | |
| Acropogon calcicola | EN | |
| Acropogon domatifer | VU | |
| Acropogon fatsioides | VU | |
| Acropogon megaphyllus | VU | |
| Acropogon veillonii | EN | |
| Acrorumohra hasseltii | EN | |
| Acrosorium papenfussii | VU | |
| Acsmithia vitiense | EN | |
| Actenoides bougainvillei | Moustached Kingfisher | VU |
| Actinella anaglyptica | VU | |
| Actinella carinofausta | VU | |
| Actinidia laevissima | VU | |
| Actinidia pilosula | VU | |
| Actinidia rudis | VU | |
| Actinidia stellatopilosa | EN | |
| Actinidia suberifolia | VU | |
| Actinidia ulmifolia | VU | |
| Actinidia vitifolia | VU | |
| Actinodaphne albifrons | VU | |
| Actinodaphne bourneae | EN | |
| Actinodaphne cuspidata | CR | |
| Actinodaphne ellipticibacca | VU | |
| Actinodaphne johorensis | VU | |
| Actinodaphne lanata | CR | |
| Actinodaphne lawsonii | VU | |
| Actinodaphne salicina | EN | |
| Adeleana forcarti | VU | |
| Adelophis copei | VU |