- Talwrn
- Trearddur Bay
- Trefdraeth
- Tregele
- Ty Croes
- Tyn-y-Gongl
- Trefil
- Tai'r-heol
- Tir-y-berth
- Trecceln
- Trethomas
- Trinant
- Tongwynlais
- Talyclun
- Temple Bar
- The Gate
- Treherbert
- Trevaughan
- Tircoed
- Tyn-y-cwm
- Tal-y-bont
- Terfyn
- Ty Mawr
- Ty'n-y-groes
- Tan-y-groes
- Tre'r-ddôl
- Tresaith
- Tanlan Banks
- Trelawnyd
- Trelogan