- Tallycreen Bridge
- Tarmon
- Teermaclane
- Teernacloghane
- Termon East
- Termon West
- The Hand Cross Roads
- Tooclae
- Toomaghera
- Tooreen
- Tromra
- Trough
- Trummer
- Trusklieve
- Tuamgraney
- Tulla
- Tulla
- Tullabrack
- Tullagh
- Tullaghaboy
- Tullagower
- Tullaher
- Tullaroe
- Tullassa
- Tullig
- Tullycreen Lower
- Tullycreen Upper
- Tullygarvan
- Turlough
- Turloughmore