T
- (Roscommon) Tinacarra
- (Roscommon) Tullytawen
- (Roscommon) Tumna
- (Sligo) Tunnagh
- (Sligo) Tawnavoultry
- (Sligo) Toberscardan
- (Sligo) Tullanaglug
- (Sligo) Toorlestraun
- (Sligo) Tawnyany
- (Sligo) Tawnaneilleen
- (Sligo) Toberawnaun
- (Sligo) Tawnalghta
- (Sligo) Tap
- (County Leitrim) Tullylackan Beg
- (County Leitrim) Turf Island
- (County Leitrim) Tullycorka
- (County Leitrim) Tarmon
- (County Leitrim) Tullintowell
- (County Leitrim) Tawnylea
- (County Leitrim) The Doons
- (County Leitrim) Tullyskeherny
- (County Leitrim) Tullinwillin
- (County Leitrim) Tully
- (County Leitrim) Tullyskeherny
- (County Leitrim) Tullyderrin
- (County Galway) Trawbaun
- (County Galway) Turlough
- (County Galway) Turloughbeg
- (County Galway) Terranea
- (County Galway) Tooreengarve