- Tarrea
- Tawin Island
- Tawnagh
- Tawnybeg
- Terranea
- Terryland
- The Bend
- The Bloody Hollow
- The Fishpond Cross Roads
- The Green Door
- Thornpark
- Tiaquin
- Tirneevin
- Toberelatan
- Toberroe
- Tonabrocky
- Tonagarraun
- Tonamace
- Tonroe
- Toomard
- Toombeola
- Tooravoola
- Tooreen
- Tooreengarve
- Tooreenmanus
- Tooreeny
- Traheen Bridge
- Trawbaun
- Trusky
- Tuam