| Latin | English | Esperanto |
|---|---|---|
| Tachyglossus aculeatus | echidna | ekidno |
| Tadorna radjah | burdekin duck | blankkapa anaso |
| Telopea specioissima | waratah | telopeo |
| Tetragonia expansa | New Zealand spinach | tetragonio |
| Tetrapturus audax | striped marlin | stria ksifio |
| Themeda australis | kangaroo grass | temedo |
| Thenus orientalis | moreton bay bug | norda skilaro |
| Threskiornis molucca | white ibis | blanka ibiso |
| Thylacinus cynocephalus | Tasmanian tiger; Tasmanian wolf | tilacino |
| Thylogale | pademelon | tilogalo |
| Thylogale billardierii | Tasmanian pademelon | kurtvosta tilogalo |
| Thylogale stigmatica | redleg pademelon | ruĝkrura tilogalo |
| Thylogale thetis | redneck pademelon | ruĝkola tilogalo |
| Thyrsites atun | snook; snoek | snuko |
| Tiliqua scincoides | blue tongue lizard | blulanga lacerto |
| Trichoglossus | lorikeet | lorikito |
| Trichoglossus chlorolepidotus | scaly-breast lorikeet | skvambrusta lorikito |
| Trichoglossus haematodus | rainbow lorikeet | ĉielarka lorikito |
| Trichoglossus rubritorquis | red-collar lorikeet | ruĝkola lorikito |
| Trichoglossus versicolor | varied lorikeet | varia loriktio |
| Trichosurus vulpecula | brushtail possum | vulpvosta posumo |
| Tridacna gigas | giant clam | tridakno |
| Trifolium arvense | haresfoot clover | griza trifolio; plugeja trifolio |
| Trifolium campestre | hop-trefoil clover | flava trifolio; kampeja trifolio |
| Trifolium pratense | red clover | ruĝa trifolio; paŝteja trifolio |
| Trifolium repens | white clover | blanka trifolio; rampa trifolio |
| Trifolium subterraneum | subterranean clover | kremkolora trifolio; subtera trifolio |
| Tringa | sandpiper | kalidro; tringo |
| Tringa glareola | wood sandpiper | brova tringo |
| Tringa hypoleucos | common sandpiper | blankventra tringo |
| Tringa stagnatilis | marsh sandpiper | marĉa tringo |
| Triodia | spinifex | triodio |
| Triodia basedowii | hard spinifex | malmola triodio |
| Triodia clelandii | weeping spinifex | penda triodio |
| Triodia irritans | porcupine grass | agaca triodio |
| Triodia irritans | porcupine spinifex | agaca triodio |
| Triodia spicata | spike-flower spinifex | pikflora triodio |
| Typha latifolia | reedmace; cattail | bruna tifao |
| Typha muelleri | raupo | rufa tifao |
| Typha orientalis | cumbungi | oranĝa tifao |