ARKive's most wanted species listed alphabetically by scientific name
| Scientific name | Common name | Status |
|---|---|---|
| Aaptosyax grypus | Mekong Giant Salmon Carp | CR |
| Abarema abbottii | VU | |
| Abarema bigemina | VU | |
| Abarema cochliacarpos | VU | |
| Abarema ganymedea | VU | |
| Abarema josephi | VU | |
| Abarema killipii | VU | |
| Abarema lehmannii | VU | |
| Abarema racemiflora | VU | |
| Abida ateni | VU | |
| Aborichthys garoensis | VU | |
| Aborichthys tikaderi | VU | |
| Abrocoma boliviensis | Bolivian Chincilla Rat | CR |
| Abronia chiszari | EN | |
| Abronia deppii | EN | |
| Abronia fuscolabialis | EN | |
| Abronia martindelcampoi | EN | |
| Abronia matudai | EN | |
| Abronia montecristoi | CR | |
| Abronia oaxacae | VU | |
| Acacia albicorticata | VU | |
| Acacia belairioides | CR | |
| Acacia bucheri | EN | |
| Acacia campbellii | VU | |
| Acacia densispina | VU | |
| Acacia etilis | VU | |
| Acacia ferruginea | VU | |
| Acacia purpurea | VU | |
| Acacia roigii | CR | |
| Acacia zapatensis | EN | |
| Acalypha andina | VU | |
| Acalypha hontauyuensis | VU | |
| Acalypha rubrinervis | EX | |
| Acalypha suirenbiensis | VU | |
| Acanthaeschna victoria | Thylacine Darner | VU |
| Acanthagrion taxaense | CR | |
| Acanthemblemaria atrata | Cocos Barnacle Blenny | VU |
| Acanthemblemaria castroi | Galapagos barnacle blenny | VU |
| Acanthemblemaria mangognatha | Revillagigedo Barnacle Blenny | VU |
| Acanthemblemaria stephensi | Malpelo barnacle blenny | VU |
| Acanthennea erinacea | VU | |
| Acanthephippium sinense | EN | |
| Acanthobrama centisquama | EN | |
| Acanthobrama hulensis | EX | |
| Acanthobrama telavivensis | EW | |
| Acanthochelys pallidipectoris | Chaco Sideneck Turtle | VU |
| Acanthocyclops hypogeus | VU | |
| Acanthodactylus ahmaddisii | EN | |
| Acanthodactylus blanci | Blanc's Fringe-toed Lizard | EN |
| Acanthodactylus harranensis | CR |