- Taczanowski's Tinamou
- Taita White-eye
- Tanager Finch
- Tanzanian Red-billed Hornbill
- Tasmanian Nativehen
- Tataupa Tinamou
- Taveta Weaver
- Tawny-bellied Screech Owl
- Tawny-bellied Seedeater
- Tawny-breasted Wren-Babbler
- Tawny-browed Owl
- Tawny-rumped Tyrannulet
- Tawny-throated Leaftosser
- Tawny Antpitta
- Tawny Eagle
- Tawny Fish Owl
- Temminck's Seedeater
- Temminck's Sunbird
- Terrestrial Brownbul
- Thamnornis
- Thick-billed Ground Pigeon
- Thick-billed Miner
- Thick-billed Saltator
- Thick-billed Seedeater
- Thick-billed Weaver
- Three-banded Warbler
- Three-streaked Tchagra
- Three-striped Hemispingus
- Three-striped Warbler
- Tinkling Cisticola
- Tiny Hawk
- Tiny Tyrant-Manakin
- Titicaca Grebe
- Tocuyo Sparrow
- Tolima Blossomcrown
- Torotoroka Scops Owl
- Torrent Tyrannulet
- Torresian Crow
- Tourmaline Sunangel
- Tricolored Blackbird
- Trilling Cisticola
- Trinidad Euphonia
- Tristram's Bunting
- Tristram's Starling
- Tropical Boubou
- Tropical Pewee
- Tropical Screech Owl
- Tufted Antshrike
- Tufted Puffin
- Tumbes Hummingbird
- Tumbes Sparrow
- Tumbes Tyrant
- Turquoise-browed Motmot
- Turquoise Flycatcher
- Tyrian Metaltail