Regions of Ireland
- Turlough
- Turlough
- Turkstown
- Turbotston
- Turbot Island
- Tulsk
- Tullyvin House
- Tullyvin
- Tullynascreen
- Tullynahinnera
- Tullymurray
- Tullymore
- Tully Lough
- Tullylease
- Tullyleague
- Tullyglass House
- Tullycreen Upper
- Tullycreen Lower
- Tullycanna
- Tullybrook
- Tullyard
- Tullyallen
- Tully
- Tullow
- Tullira Castle
- Tullig Point
- Tullig
- Tullig
- Tullaroan
- Tullamore River
- Tullamore
- Tullamore
- Tullaher Lough
- Tullagh Point
- Tullaghought
- Tullagher
- Tullagh Bay
- Tullaghanoge
- Tullaghan Bay
- Tullaghan
- Tulla
- Tudenham Park
- Tubber
- Tuam
- Truskmore
- Trusk Lough
- Trusklieve
- Trubley Castle
- Trough
- Triogue River
- Trimoge River
- Trim
- The Triangle
- Tremone Bay
- Tremblestown River
- Treantagh
- Trawmore Bay
- Trawenagh Bay
- Trawbreaga Bay
- Traverston House
- Tranarossan Bay
- Tranagh
- Tramore Bay
- Tramore Bay
- Trá Mhór
- Tralong Bay
- Tralee Bay
- Tralee
- Tracton
- Tracarta
- Trabolgan House
- Townley Hall
- Towerhill House
- Tower
- Tourin
- Tourig River
- Tory Sound
- Tory Island
- The Tor Rocks
- Torneady Point
- Tormore Island
- Torc Mountain
- Torc Cascade
- Toormore Bay
- Toormore
- Toormore
- Toormakeady Lodge
- Toormakeady
- Tooreeny
- Tooreens
- Tooreengarriv
- Tooreendonnell
- Tooreencahill
- Tooreenbrien Bridge
- Tooreen
- Tooreen
- Tooravoola
- Tooraneena
- Toor
- Toon River
- Toonagh House
- Toomyvara
- Toomona House
- Toomard
- Tooban Junction
- Tonlegee House
- Tonduff
- Tomies Mountain
- Tomhaggard
- Tuamgraney
- Tombrack
- Tomacurry
- Tolka River
- Toghermore
- The Togher
- Togher
- Togher
- Roundwood
- Togher
- Togher
- Toem
- Toe Head Bay
- Toe Head
- Tobertynan House
- Toberscanavan
- Toberdan
- Tobercurry
- Tober
- Tober
- Tivoli House
- Tirraboy
- Tirneevin
- Tiragarvan
- South Tipperary
- North Tipperary
- County Tipperary
- Tipperary
- Tintrim House
- Tintern Abbey
- Tinny Park
- Tinnaslatty House
- Timnapark House
- Tinnahinch
- Tinnaglogh
- Tinkerslane
- Tincoora
- Tinarana House
- Tinalira
- Tinahely
- Timoney Park
- Timolin
- Timoleague
- Timahoe
- Timahoe
- Tievemore House
- Tievemore
- Tiaquin
- Thurles
- The Three Sisters
- The Pigeons
- Threecastles House
- Three Castle Head
- Thomastown Park
- Thomaston Park
- Thomastown Castle
- Thomastown Castle
- Thomastown
- Thomastown
- Thomastown
- Thomas Street
- Tervoe House
- Terryglass
- Termon Hill
- Termonfeckin
- Termon Cottage
- Termoncarragh
- Termonbarry
- Terenure
- Templetuohy
- Templemore
- Templehouse Lake
- Temple House
- Templebreedy
- Templeboy
- Templebodan
- Temple
- Temora House
- Teltown
- Teeromoyle
- Teerelton
- Teeranearagh
- Teelin Bay
- Teelin
- Tedavnet
- Tearaght Island
- River Tay
- Lough Tay
- Tawnyinah
- Tawny Bay
- Tawnyard Lough