- Taiga Bean Goose
- Taiga Flycatcher
- Tambourine Dove
- Tasmanian Nativehen
- Tasmanian Scrubwren
- Tasmanian Thornbill
- Tawny-breasted Honeyeater
- Tawny-crowned Honeyeater
- Tawny-flanked Prinia
- Tawny Antpitta
- Tawny Eagle
- Tawny Frogmouth
- Tawny Pipit
- Temminck's Stint
- Tennessee Warbler
- Terek Sandpiper
- Terrestrial Brownbul
- Tessmann's Flycatcher
- Thekla's Lark
- Thick-billed Cuckoo
- Thick-billed Euphonia
- Thick-billed Flowerpecker
- Thick-billed Grasswren
- Thick-billed Murre
- Thick-billed Warbler
- Thick-billed Weaver
- Three-banded Plover
- Tickell's Blue Flycatcher
- Tickell's Thrush
- Tit Berrypecker
- Toco Toucan
- Tomtit
- Torrent Flyrobin
- Torresian Crow
- Torresian Imperial Pigeon
- Tourmaline Sunangel
- Tree Martin
- Tree Pipit
- Tricolored Heron
- Tropical Boubou
- Tropical Kingbird
- Tropical Parula
- Tropical Screech Owl
- Trumpeter Hornbill
- Tufted Duck
- Tui
- Turkey Vulture
- Turquoise-fronted Amazon
- Turquoise Flycatcher
- Twelve-wired Bird-of-paradise
- Twite
- Tylas Vanga
- Tyrian Metaltail