| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Tianarath Cross Roads | city | Loch Garman | Ireland | 52.3002778 | -6.8030556 | 111 | 4038 |
| Tiaquin | city | Gaillimh | Ireland | 53.3597222 | -8.6333333 | 242 | 2871 |
| Ticknevin Bridge | city | Cill Dara | Ireland | 53.3186111 | -6.9591667 | 236 | 6252 |
| Tiduff | city | Ciarrai | Ireland | 52.2397222 | -10.2994444 | 236 | 1535 |
| Tiduff | city | Ciarrai | Ireland | 52.4094444 | -9.9344444 | 206 | 380 |
| Tierna | city | Maigh Eo | Ireland | 53.9011111 | -9.6911111 | 0 | 905 |
| Tiershanaghan | city | Ciarrai | Ireland | 52.4208333 | -9.8527778 | 295 | 907 |
| Tieveborne | city | County Donegal | Ireland | 55.0644444 | -7.4291667 | 22 | 2583 |
| Tievelough | city | County Donegal | Ireland | 54.8097222 | -8.1508333 | 577 | 2315 |
| Tievemore | city | | Ireland | 54.5833333 | -7.7666667 | 1210 | 2253 |
| Tigh Mochua | city | Laois | Ireland | 52.9583333 | -7.2052778 | 498 | 2811 |
| Tigh Molaige | city | Corcaigh | Ireland | 51.6422222 | -8.7730556 | 42 | 5097 |
| Tigh na hEille | city | Cill Mhantain | Ireland | 52.7966667 | -6.4633333 | 396 | 4573 |
| Tigh na hÉille | city | Cill Mhantain | Ireland | 52.7966667 | -6.4633333 | 396 | 4573 |
| Tikincor | city | Port Lairge | Ireland | 52.3547222 | -7.6505556 | 259 | 3832 |
| Tiknock | city | County Carlow | Ireland | 52.8919444 | -6.6355556 | 465 | 4370 |
| Timahoe | city | Laois | Ireland | 52.9583333 | -7.2052778 | 498 | 2811 |
| Timahoe | city | Cill Dara | Ireland | 53.335 | -6.8386111 | 298 | 6986 |
| Timahoe Cross Roads | city | Cill Dara | Ireland | 53.3361111 | -6.8447222 | 298 | 6986 |
| Timoleague | city | Corcaigh | Ireland | 51.6422222 | -8.7730556 | 42 | 5097 |
| Timolin | city | Cill Dara | Ireland | 52.9825 | -6.8116667 | 488 | 6854 |
| Tinacarra | city | Ros Comain | Ireland | 53.9686111 | -8.3738889 | 249 | 2216 |
| Tinahely | city | Cill Mhantain | Ireland | 52.7966667 | -6.4633333 | 396 | 4573 |
| Tinalira | city | | Ireland | 52.1847222 | -7.7280556 | 495 | 4593 |
| Tincashel Cross Roads | city | Cill Chainnigh | Ireland | 52.7072222 | -7.5588889 | 475 | 3042 |
| Tincoora | city | | Ireland | 52.1 | -8.8666667 | 593 | 5188 |
| Tine | city | Gaillimh | Ireland | 53.1494444 | -8.3725 | 246 | 2885 |
| Tinglas | city | | Ireland | 53.3891667 | -6.2969444 | 62 | 101763 |
| Tinker's Cross Roads | city | Corcaigh | Ireland | 51.76 | -8.7961111 | 249 | 5229 |
| Tinkerslane | city | An Mhi | Ireland | 53.505 | -6.9811111 | 275 | 4094 |
| Tinkerʼs Cross Roads | city | Corcaigh | Ireland | 51.76 | -8.7961111 | 249 | 5229 |
| Tinmuck | city | County Offaly | Ireland | 53.3575 | -7.7083333 | 249 | 2759 |
| Tinnabally Cross Roads | city | Ciarrai | Ireland | 52.1338889 | -9.77 | 262 | 2204 |
| Tinnacarrig | city | County Carlow | Ireland | 52.565 | -6.8886111 | 242 | 4100 |
| Tinnacross Cross Roads | city | Loch Garman | Ireland | 52.5447222 | -6.4775 | 249 | 4029 |
| Tinnaglogh | city | Loch Garman | Ireland | 52.2680556 | -6.8972222 | 173 | 3915 |
| Tinnahinch | city | County Carlow | Ireland | 52.5386111 | -6.9480556 | 91 | 3725 |
| Tinnascolly | city | Cill Chainnigh | Ireland | 52.4502778 | -6.9397222 | 55 | 3692 |
| Tinny Park | city | | Ireland | 53.6833333 | -8.3833333 | 249 | 2079 |
| Tinoranhill Cross Roads | city | Cill Mhantain | Ireland | 52.9580556 | -6.7497222 | 764 | 5212 |
| Tinvaun | city | Cill Chainnigh | Ireland | 52.5080556 | -7.2430556 | 255 | 3315 |
| Tiobraid Arann | city | Tiobraid Arann | Ireland | 52.4733333 | -8.1558333 | 544 | 2864 |
| Tiobraid Árann | city | Tiobraid Arann | Ireland | 52.4733333 | -8.1558333 | 544 | 2864 |
| Tipperary | city | Tiobraid Arann | Ireland | 52.4733333 | -8.1558333 | 544 | 2864 |
| Tipperkevin | city | Cill Dara | Ireland | 53.1672222 | -6.6102778 | 616 | 6994 |
| Tiragarvan | city | | Ireland | 53.9833333 | -6.7666667 | 252 | 3465 |
| Tirhogar Cross Roads | city | Laois | Ireland | 53.1358333 | -7.1766667 | 318 | 2803 |
| Tirinisk | city | County Donegal | Ireland | 54.7966667 | -7.6113889 | 124 | 2327 |
| Tirlahode Lower | city | An Cabhan | Ireland | 53.9461111 | -7.1863889 | 501 | 2426 |
| Tirmoghan Common | city | Cill Dara | Ireland | 53.3738889 | -6.7316667 | 285 | 7116 |
| Tirnaneill Cross Roads | city | County Monaghan | Ireland | 54.2866667 | -6.9663889 | 242 | 3476 |
| Tirneevin | city | Gaillimh | Ireland | 53.0641667 | -8.8830556 | 144 | 2767 |
| Tirraboy | city | | Ireland | 55.25 | -7.15 | 82 | 2266 |
|
|