| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Talamh an Phríomháidh | city | Lu | Ireland | 53.76 | -6.31 | 65 | 11349 |
| Tallanstown | city | Lu | Ireland | 53.92 | -6.55 | 118 | 3577 |
| Tearmann Feichin | city | Lu | Ireland | 53.76 | -6.27 | 3 | 5442 |
| Termonfeckin | city | Lu | Ireland | 53.76 | -6.27 | 3 | 5442 |
| The Bush | city | Lu | Ireland | 54.00 | -6.20 | 121 | 2643 |
| The White Cross | city | Lu | Ireland | 53.95 | -6.52 | 111 | 2838 |
| Tigh Beannáin | city | Lu | Ireland | 53.86 | -6.44 | 16 | 3209 |
| Tobertoby | city | Lu | Ireland | 53.77 | -6.25 | 0 | 3172 |
| Togher | city | Lu | Ireland | 53.84 | -6.30 | 62 | 2518 |
| Townrath Bridge | city | Lu | Ireland | 53.74 | -6.32 | 29 | 28372 |
| Tullaghomeath | city | Lu | Ireland | 54.07 | -6.28 | 830 | 3849 |
| Tullyallen | city | Lu | Ireland | 53.74 | -6.42 | 118 | 8818 |
| Tullycahan | city | Lu | Ireland | 53.95 | -6.58 | 144 | 3012 |
| Tullygowan | city | Lu | Ireland | 53.94 | -6.64 | 160 | 2370 |
| Two Mile River Bridge | city | Lu | Ireland | 54.06 | -6.22 | 206 | 3930 |