T
- (Sligo) Tawnymucklagh
- (Sligo) Tawnalion
- (Roscommon) Toomanagh
- (Roscommon) Tullaghanmore
- (Roscommon) Tullaghanrock
- (Roscommon) Turlagharee
- (Roscommon) Teevnacreeva
- (Roscommon) Tibohine
- (Roscommon) Tully
- (Roscommon) Tully
- (Roscommon) Taghnarra
- (Roscommon) Taghnoose
- (Roscommon) Tonregee
- (Roscommon) Turlaghmamaddy
- (Roscommon) Termon More
- (Roscommon) Termon Beg
- (Roscommon) Tonrevagh
- (Roscommon) Tawnyover
- (Roscommon) Toobracken
- (Sligo) Tullycusheen Beg
- (Sligo) Tullycusheen More
- (Sligo) Tobertelly
- (Sligo) Toorard
- (Sligo) Toberpatrick
- (Sligo) Tanrego Intake
- (Sligo) Tullaghan
- (Sligo) Tullyhugh
- (Sligo) Templehouse Demesne
- (Sligo) Templehouse
- (Sligo) Toberbride