- Ultramarine Flycatcher
- Ultramarine Grosbeak
- Ultramarine Kingfisher
- Uluguru Bushshrike
- Uluguru Mountain Greenbul
- Uluguru Violet-backed Sunbird
- Undulated Antpitta
- Undulated Tinamou
- Unicolored Antwren
- Unicolored Jay
- Uniform Antshrike
- Uniform Crake
- Uniform Swiftlet
- Upland Buzzard
- Upland Goose
- Usambara Akalat
- Usambara Double-collared Sunbird
- Usambara Thrush
- Usambara Weaver
- Usambiro Barbet
- Ussher's Flycatcher