- Tristia
- Trouthill
- Tullaghanbaun
- Tullaghanduff
- Tullaghaunnashammer
- Tullanacorra
- Tulleague
- Tully
- Tully
- Tully
- Tully Beg
- Tully Commons
- Tullyganny
- Tullynahoo
- Tullyroe
- Tullysleva
- Tumgesh
- Turlough
- Turlough
- Taghnarra
- Taghnoose
- Tarloughmore
- Tawnyover
- Teevnacreeva
- Termon Beg
- Termon More
- Tarmonbarry
- Thomas Street
- Tibohine
- Tinacarra