| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Tianarath Cross Roads | city | Wexford | Ireland | 52.30 | -6.80 | 111 | 2330 |
| Tiaquin | city | Galway | Ireland | 53.36 | -8.63 | 242 | 1210 |
| Tibberagany | city | Kilkenny | Ireland | 52.35 | -7.35 | 13 | 6425 |
| Tibbotstown | city | Cork | Ireland | 51.94 | -8.27 | 830 | 4362 |
| Ticknevin Bridge | city | Kildare | Ireland | 53.32 | -6.96 | 236 | 1899 |
| Tiduff | city | Kerry | Ireland | 52.41 | -9.93 | 206 | 392 |
| Tiduff | city | Kerry | Ireland | 52.24 | -10.30 | 236 | 689 |
| Tierna | city | Mayo | Ireland | 53.90 | -9.69 | 0 | 425 |
| Tiershanaghan | city | Kerry | Ireland | 52.42 | -9.85 | 295 | 1683 |
| Tieveborne | city | Donegal | Ireland | 55.06 | -7.43 | 22 | 2750 |
| Tievelough | city | Donegal | Ireland | 54.81 | -8.15 | 830 | 171 |
| Tievemore | city | Donegal | Ireland | 54.59 | -7.77 | 902 | 1616 |
| Tieveragh | city | Donegal | Ireland | 54.84 | -8.11 | 885 | 283 |
| Tigh Beannáin | city | Lu | Ireland | 53.86 | -6.44 | 16 | 3209 |
| Tigh Mo Linne | city | Kildare | Ireland | 52.98 | -6.81 | 830 | 1872 |
| Tigh Mochua | city | Laois | Ireland | 52.96 | -7.21 | 830 | 1062 |
| Tigh Molaige | city | Cork | Ireland | 51.64 | -8.77 | 42 | 2219 |
| Tigh Munna | city | An Iarmhi | Ireland | 53.60 | -7.28 | 360 | 1431 |
| Tigh an Bhábhúin | city | Kilkenny | Ireland | 52.51 | -7.24 | 255 | 2029 |
| Tigh an Chuain | city | Wexford | Ireland | 52.43 | -6.55 | 177 | 3616 |
| Tigh na Coille | city | Wexford | Ireland | 52.40 | -6.58 | 164 | 2428 |
| Tigh na Craoibhe | city | Wexford | Ireland | 52.52 | -6.25 | 3 | 1145 |
| Tigh na Liontán | city | Kilkenny | Ireland | 52.81 | -7.32 | 396 | 2327 |
| Tigh na Reanna | city | Kilkenny | Ireland | 52.42 | -6.98 | 59 | 7477 |
| Tigh na Scoile | city | Kilkenny | Ireland | 52.45 | -6.94 | 55 | 4449 |
| Tigh na hEille | city | Wicklow | Ireland | 52.80 | -6.46 | 396 | 1714 |
| Tikerlemin | city | Kilkenny | Ireland | 52.55 | -7.01 | 830 | 2139 |
| Tikincor | city | Ireland | 52.35 | -7.65 | 259 | 11252 | |
| Tiknock | city | Ireland | 51.98 | -7.84 | 42 | 7863 | |
| Tiknock | city | Carlow | Ireland | 52.89 | -6.64 | 830 | 2199 |
| Tilladavin | city | Wexford | Ireland | 52.19 | -6.51 | 0 | 1933 |
| Timahoe | city | Kildare | Ireland | 53.34 | -6.84 | 298 | 2248 |
| Timahoe | city | Laois | Ireland | 52.96 | -7.21 | 830 | 1062 |
| Timahoe Cross Roads | city | Kildare | Ireland | 53.34 | -6.84 | 298 | 2184 |
| Timoleague | city | Cork | Ireland | 51.64 | -8.77 | 42 | 2219 |
| Timolin | city | Kildare | Ireland | 52.98 | -6.81 | 830 | 1872 |
| Tinacarra | city | Roscommon | Ireland | 53.97 | -8.37 | 249 | 1340 |
| Tinageragh | city | Cork | Ireland | 52.02 | -8.36 | 830 | 2069 |
| Tinahely | city | Wicklow | Ireland | 52.80 | -6.46 | 396 | 1714 |
| Tinalira | city | Ireland | 52.18 | -7.73 | 830 | 1060 | |
| Tincashel Cross Roads | city | Kilkenny | Ireland | 52.71 | -7.56 | 830 | 2259 |
| Tincoon | city | Wexford | Ireland | 52.43 | -6.55 | 177 | 3616 |
| Tincoora | city | Cork | Ireland | 52.10 | -8.87 | 830 | 1426 |
| Tine | city | Galway | Ireland | 53.15 | -8.37 | 246 | 1452 |
| Tinglas | city | Dublin | Ireland | 53.39 | -6.30 | 62 | 199166 |
| Tinker's Cross Roads | city | Cork | Ireland | 51.76 | -8.80 | 249 | 3701 |
| Tinkerslane | city | Meath | Ireland | 53.51 | -6.98 | 275 | 2012 |
| Tinkerstown Cross Roads | city | Wexford | Ireland | 52.59 | -6.54 | 206 | 2915 |
| Tinker’s Cross Roads | city | Cork | Ireland | 51.76 | -8.80 | 249 | 3701 |
| Tinmuck | city | Offaly | Ireland | 53.36 | -7.71 | 249 | 2987 |
| Tinnabally Cross Roads | city | Kerry | Ireland | 52.13 | -9.77 | 262 | 4613 |
| Tinnacarrick Philip | city | Wexford | Ireland | 52.35 | -6.83 | 255 | 1828 |
| Tinnacarrig | city | Carlow | Ireland | 52.56 | -6.89 | 242 | 1842 |
| Tinnacree | city | Wexford | Ireland | 52.52 | -6.25 | 3 | 1145 |
| Tinnacross Cross Roads | city | Wexford | Ireland | 52.54 | -6.48 | 249 | 2945 |
| Tinnaglogh | city | Wexford | Ireland | 52.27 | -6.90 | 173 | 2327 |
| Tinnahinch | city | Carlow | Ireland | 52.54 | -6.95 | 91 | 2462 |
| Tinnakilla | city | Wexford | Ireland | 52.40 | -6.58 | 164 | 2428 |
| Tinnakilla | city | Ireland | 52.55 | -9.24 | 390 | 1568 | |
| Tinnalintan | city | Kilkenny | Ireland | 52.81 | -7.32 | 396 | 2327 |
| Tinnarakeen | city | Laois | Ireland | 52.89 | -7.44 | 291 | 1622 |
| Tinnaranny | city | Kilkenny | Ireland | 52.42 | -6.98 | 59 | 7477 |
| Tinnascart | city | Cork | Ireland | 52.22 | -8.72 | 830 | 2082 |
| Tinnascolly | city | Kilkenny | Ireland | 52.45 | -6.94 | 55 | 4449 |
| Tinnaslaty | city | Kilkenny | Ireland | 52.43 | -6.94 | 19 | 8379 |
| Tinny Park | city | Roscommon | Ireland | 53.68 | -8.38 | 249 | 1184 |
| Tinoranhill Cross Roads | city | Wicklow | Ireland | 52.96 | -6.75 | 830 | 2470 |
| Tinvaun | city | Kilkenny | Ireland | 52.51 | -7.24 | 255 | 2029 |
| Tiobradán | city | Roscommon | Ireland | 53.53 | -8.07 | 246 | 1327 |
| Tiobraid Árann | city | Ireland | 52.47 | -8.16 | 830 | 6763 | |
| Tiorabhain | city | Kerry | Ireland | 52.16 | -10.44 | 830 | 823 |
| Tipperaria | city | Ireland | 52.47 | -8.16 | 830 | 6763 | |
| Tipperary | city | Ireland | 52.47 | -8.16 | 830 | 6763 | |
| Tipperkevin | city | Kildare | Ireland | 53.17 | -6.61 | 830 | 6586 |
| Tir Oileain | city | Galway | Ireland | 53.29 | -9.05 | 3 | 50454 |
| Tiragarvan | city | Ireland | 53.98 | -6.77 | 252 | 5457 | |
| Tiraun | city | Mayo | Ireland | 54.14 | -10.11 | 3 | 619 |
| Tirhogar Cross Roads | city | Laois | Ireland | 53.14 | -7.18 | 318 | 6096 |
| Tirinisk | city | Donegal | Ireland | 54.80 | -7.61 | 124 | 2666 |
| Tirkeeran | city | Donegal | Ireland | 54.82 | -7.54 | 190 | 3897 |
| Tirlahode Lower | city | Cavan | Ireland | 53.95 | -7.19 | 830 | 1908 |
| Tirmoghan Common | city | Kildare | Ireland | 53.37 | -6.73 | 285 | 2434 |
| Tirnaneill Cross Roads | city | Monaghan | Ireland | 54.29 | -6.97 | 242 | 7588 |
| Tirneevin | city | Galway | Ireland | 53.06 | -8.88 | 144 | 1328 |
| Tirraboy | city | Donegal | Ireland | 55.25 | -7.15 | 82 | 1381 |
| Tisaxon | city | Cork | Ireland | 51.71 | -8.59 | 246 | 2969 |