| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Taaffe's Loch | city | Meath | Ireland | 53.68 | -6.62 | 236 | 9585 |
| Taaffe’s Loch | city | Meath | Ireland | 53.68 | -6.62 | 236 | 9585 |
| Taberlomina Cross Roads | city | Wexford | Ireland | 52.49 | -6.34 | 209 | 1983 |
| Tacuanshane | city | Wexford | Ireland | 52.21 | -6.41 | 3 | 2085 |
| Taghadoe Cross Roads | city | Kildare | Ireland | 53.35 | -6.60 | 259 | 20804 |
| Taghmon | city | Wexford | Ireland | 52.32 | -6.65 | 239 | 2441 |
| Taghsheenod | city | Longford | Ireland | 53.62 | -7.72 | 282 | 1394 |
| Taghshinny | city | Longford | Ireland | 53.60 | -7.72 | 239 | 1556 |
| Tagoat | city | Wexford | Ireland | 52.24 | -6.38 | 3 | 3929 |
| Tahilla | city | Kerry | Ireland | 51.84 | -9.84 | 9 | 421 |
| Tailor's Cross Roads | city | Carlow | Ireland | 52.71 | -6.81 | 331 | 2032 |
| Tailor’s Cross Roads | city | Carlow | Ireland | 52.71 | -6.81 | 331 | 2032 |
| Tailtin | city | Meath | Ireland | 53.70 | -6.78 | 187 | 2580 |
| Tairbeart | city | Kerry | Ireland | 52.57 | -9.38 | 9 | 1616 |
| Talach | city | Mayo | Ireland | 54.24 | -10.00 | 22 | 1856 |
| Talagtas | city | South Dublin | Ireland | 53.29 | -6.34 | 298 | 184598 |
| Talamh an Phríomháidh | city | Lu | Ireland | 53.76 | -6.31 | 65 | 11349 |
| Talamoras | city | Offaly | Ireland | 53.27 | -7.49 | 239 | 12646 |
| Talbot's Bridge | city | Kerry | Ireland | 52.32 | -9.38 | 830 | 1390 |
| Talbotstown | city | Wicklow | Ireland | 52.93 | -6.63 | 830 | 2063 |
| Talbot’s Bridge | city | Kerry | Ireland | 52.32 | -9.38 | 830 | 1390 |
| Tallagh | city | Mayo | Ireland | 54.24 | -10.00 | 22 | 1856 |
| Tallagh | city | Mayo | Ireland | 54.02 | -9.85 | 82 | 208 |
| Tallaght | city | South Dublin | Ireland | 53.29 | -6.34 | 298 | 184598 |
| Tallanstown | city | Lu | Ireland | 53.92 | -6.55 | 118 | 3577 |
| Tallow | city | Ireland | 52.09 | -8.01 | 203 | 1999 | |
| Tallowbridge | city | Ireland | 52.10 | -8.00 | 101 | 1980 | |
| Tallycreen Bridge | city | Clare | Ireland | 52.67 | -9.31 | 65 | 1192 |
| Tallyho | city | Wicklow | Ireland | 52.81 | -6.36 | 830 | 1296 |
| Tallyvogy | city | Monaghan | Ireland | 54.28 | -7.00 | 282 | 6910 |
| Tamhlacht | city | South Dublin | Ireland | 53.29 | -6.34 | 298 | 184598 |
| Tamhnaí Liatha | city | Leitrim | Ireland | 54.21 | -8.16 | 216 | 763 |
| Tamlat | city | Monaghan | Ireland | 54.27 | -6.87 | 216 | 2553 |
| Tamney | city | Donegal | Ireland | 55.20 | -7.68 | 167 | 1323 |
| Tang | city | An Iarmhi | Ireland | 53.53 | -7.78 | 219 | 1996 |
| Tangaveane | city | Donegal | Ireland | 54.79 | -8.17 | 830 | 272 |
| Tankardrath | city | Meath | Ireland | 53.71 | -6.71 | 249 | 6196 |
| Tankardsgarden | city | Kildare | Ireland | 53.21 | -6.82 | 393 | 19109 |
| Tankardstown | city | Cork | Ireland | 52.26 | -8.46 | 331 | 1611 |
| Tankardstown | city | Ireland | 52.41 | -8.65 | 229 | 3097 | |
| Tankardstown | city | Meath | Ireland | 53.74 | -6.61 | 334 | 2203 |
| Tankardstown | city | Meath | Ireland | 53.69 | -6.76 | 183 | 4600 |
| Tankardstown Bridge | city | Laois | Ireland | 52.94 | -6.96 | 180 | 3323 |
| Tankardstown Cross Roads | city | Carlow | Ireland | 52.82 | -6.69 | 347 | 3103 |
| Tanners Water | city | Fingal | Ireland | 53.60 | -6.17 | 0 | 14811 |
| Tannersrath | city | Ireland | 52.38 | -7.69 | 134 | 16408 | |
| Tanregee | city | Mayo | Ireland | 53.95 | -9.87 | 344 | 450 |
| Tanyara Bridge | city | Cork | Ireland | 51.79 | -8.84 | 830 | 1964 |
| Taobh Mór | city | Donegal | Ireland | 54.59 | -7.77 | 902 | 1616 |
| Taobh an Locha | city | Donegal | Ireland | 54.81 | -8.15 | 830 | 171 |
| Tap | city | Sligo | Ireland | 54.12 | -8.25 | 830 | 677 |
| Tar Bridge | city | Ireland | 52.28 | -7.83 | 252 | 1829 | |
| Tara | city | Offaly | Ireland | 53.33 | -7.55 | 242 | 3297 |
| Tarbert | city | Kerry | Ireland | 52.57 | -9.38 | 9 | 1616 |
| Tarloughmore | city | Roscommon | Ireland | 53.40 | -8.15 | 278 | 1334 |
| Tarmon | city | Kerry | Ireland | 52.54 | -9.38 | 259 | 1997 |
| Tarmon | city | Clare | Ireland | 52.65 | -9.37 | 49 | 859 |
| Tarmon | city | Leitrim | Ireland | 54.13 | -8.08 | 190 | 775 |
| Tarmonbarry | city | Ireland | 53.75 | -7.92 | 216 | 1505 | |
| Tarrant's Cross Roads | city | Cork | Ireland | 52.29 | -8.87 | 830 | 1519 |
| Tarrant’s Cross Roads | city | Cork | Ireland | 52.29 | -8.87 | 830 | 1519 |
| Tarrea | city | Galway | Ireland | 53.16 | -8.93 | 6 | 1611 |
| Tassaggart | city | South Dublin | Ireland | 53.29 | -6.44 | 830 | 58942 |
| Tatestown | city | Meath | Ireland | 53.69 | -6.74 | 183 | 7779 |
| Tattans Glen | city | Cork | Ireland | 51.96 | -8.26 | 830 | 3332 |
| Tattyboy | city | Monaghan | Ireland | 54.02 | -6.62 | 255 | 3283 |
| Taughboy | city | Donegal | Ireland | 54.75 | -7.83 | 830 | 2017 |
| Taur | city | Cork | Ireland | 52.23 | -9.12 | 895 | 1062 |
| Tavneena | city | Mayo | Ireland | 53.90 | -8.77 | 830 | 1454 |
| Tawlaght | city | Kerry | Ireland | 52.29 | -9.86 | 0 | 1292 |
| Tawnagh | city | Galway | Ireland | 53.16 | -8.99 | 3 | 1291 |
| Tawnagh | city | Mayo | Ireland | 54.01 | -9.29 | 167 | 945 |
| Tawnagh | city | Mayo | Ireland | 53.77 | -9.47 | 298 | 4130 |
| Tawnagh Beg | city | Mayo | Ireland | 53.95 | -9.14 | 88 | 1918 |
| Tawnagh More | city | Mayo | Ireland | 53.84 | -9.12 | 249 | 1999 |
| Tawnaghaknaff | city | Mayo | Ireland | 53.87 | -9.10 | 377 | 1739 |
| Tawnaghbeg | city | Mayo | Ireland | 53.99 | -8.61 | 344 | 1079 |
| Tawnaghlaur | city | Mayo | Ireland | 53.98 | -10.15 | 72 | 396 |
| Tawnaghmore | city | Mayo | Ireland | 54.00 | -9.18 | 177 | 1920 |
| Tawnaghmore | city | Mayo | Ireland | 54.19 | -9.20 | 13 | 1517 |
| Tawnaghmore | city | Mayo | Ireland | 53.99 | -10.15 | 72 | 396 |
| Tawnalghta | city | Sligo | Ireland | 54.18 | -8.97 | 374 | 812 |
| Tawnamaddoo | city | Sligo | Ireland | 54.20 | -8.95 | 301 | 890 |
| Tawnamartela | city | Mayo | Ireland | 53.93 | -9.54 | 830 | 1014 |
| Tawnanaddoo | city | Sligo | Ireland | 54.20 | -8.95 | 301 | 890 |
| Tawnanasool | city | Mayo | Ireland | 54.12 | -9.79 | 190 | 476 |
| Tawnaneilleen | city | Sligo | Ireland | 54.13 | -8.89 | 830 | 257 |
| Tawnavoultry | city | Sligo | Ireland | 54.09 | -8.67 | 249 | 1000 |
| Tawnawoggaun | city | Mayo | Ireland | 53.91 | -9.53 | 154 | 1364 |
| Tawneyshane | city | Mayo | Ireland | 53.91 | -9.28 | 285 | 4249 |
| Tawnies | city | Cork | Ireland | 51.63 | -8.91 | 160 | 5679 |
| Tawny | city | Donegal | Ireland | 55.20 | -7.68 | 167 | 1323 |
| Tawny | city | Donegal | Ireland | 54.62 | -8.60 | 62 | 1106 |
| Tawnyany | city | Sligo | Ireland | 54.09 | -8.94 | 830 | 619 |
| Tawnybeg | city | Galway | Ireland | 53.33 | -9.24 | 387 | 1734 |
| Tawnycoolawee | city | Mayo | Ireland | 53.87 | -9.32 | 249 | 11295 |
| Tawnyeeny | city | Mayo | Ireland | 53.87 | -9.38 | 249 | 1934 |
| Tawnyemon | city | Mayo | Ireland | 53.82 | -9.46 | 206 | 3972 |
| Tawnyinah | city | Mayo | Ireland | 53.90 | -8.77 | 830 | 1454 |
| Tawnykinaff | city | Mayo | Ireland | 53.94 | -9.27 | 252 | 1038 |
| Tawnylaheen | city | Mayo | Ireland | 53.89 | -9.26 | 180 | 7421 |
| Tawnylea | city | Leitrim | Ireland | 54.21 | -8.16 | 216 | 763 |
| Tawnylough | city | Mayo | Ireland | 53.79 | -9.04 | 252 | 1677 |
| Tawnynaboll | city | Mayo | Ireland | 54.28 | -9.60 | 830 | 210 |
| Taylor's Cross | city | Offaly | Ireland | 53.16 | -7.95 | 239 | 2727 |
| Taylorstown Bridge | city | Wexford | Ireland | 52.27 | -6.79 | 16 | 2378 |
| Taylorstown Cross Roads | city | Wexford | Ireland | 52.27 | -6.80 | 16 | 2403 |
| Taylor’s Cross | city | Offaly | Ireland | 53.16 | -7.95 | 239 | 2727 |