ARKive's most wanted species listed alphabetically by scientific name
| Scientific name | Common name | Status |
|---|---|---|
| Trachylepis tavaratra | VU | |
| Trachyochridia filocincta | CR | |
| Trachypithecus laotum | White-browed Black Langur | VU |
| Trachypithecus shortridgei | Shortridge’s langur | EN |
| Travancoria elongata | Periyar Loach | EN |
| Travancoria jonesi | Travancore Loach | EN |
| Treron sanctithomae | São Tomé Green-pigeon | VU |
| Triaenodes phalacris | Athens Caddisfly | EX |
| Triaenodes tridonata | Three-tooth Caddisfly | EX |
| Triaenops auritus | Grandidier’s trident bat | VU |
| Tribolonotus blanchardi | Blanchard's Helmet Skink | VU |
| Tricalysia acidophylla | VU | |
| Tricalysia africana | VU | |
| Tricalysia atherura | VU | |
| Tricalysia concolor | VU | |
| Tricalysia erythrospora | CR | |
| Tricalysia lejolyana | EN | |
| Tricalysia obstetrix | VU | |
| Tricalysia pedicellata | VU | |
| Tricalysia schliebenii | VU | |
| Tricalysia talbotii | VU | |
| Trichilia acuminata | VU | |
| Trichilia areolata | VU | |
| Trichilia breviflora | EN | |
| Trichilia discolor | EN | |
| Trichilia hispida | VU | |
| Trichilia micropetala | VU | |
| Trichilia pittieri | VU | |
| Trichilia ramalhoi | VU | |
| Trichilia trachyantha | EN | |
| Trichilia ulei | VU | |
| Trichodactylus crassus | EN | |
| Trichoferus bergeri | EN | |
| Trichomanes fulgens | CR | |
| Trichomanes paucisorum | VU | |
| Trichomycterus chungarensis | VU | |
| Trichomycterus venulosus | CR | |
| Trichoscypha cavalliensis | VU | |
| Trichoscypha mannii | VU | |
| Triclisia lanceolata | EN | |
| Tricula mahadevensis | VU | |
| Tridacna rosewateri | VU | |
| Tridacna tevoroa | Tevoro Clam | VU |
| Trigonoscuta rossi | Fort Ross Weevil | EX |
| Trigonoscuta yorbalindae | Yorba Linda Weevil | EX |
| Trigonostemon arboreus | VU | |
| Trigonostemon cherrieri | CR | |
| Trigonostemon fragilis | VU | |
| Trimenia wallengrenii | Wallengren's Copper | EN |
| Trimeresurus brongersmai | Brongersma's Pit Viper | VU |