| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Tara | city | County Offaly | Ireland | 53.3266667 | -7.5541667 | 242 | 2711 |
| Taylor's Cross | city | County Offaly | Ireland | 53.1616667 | -7.9513889 | 239 | 2691 |
| Taylorʼs Cross | city | County Offaly | Ireland | 53.1616667 | -7.9513889 | 239 | 2691 |
| Templepark | city | County Offaly | Ireland | 52.9213889 | -7.9930556 | 396 | 2719 |
| The Island | city | County Offaly | Ireland | 53.3097222 | -7.6694444 | 229 | 2665 |
| Tinmuck | city | County Offaly | Ireland | 53.3575 | -7.7083333 | 249 | 2759 |
| Tober | city | County Offaly | Ireland | 53.375 | -7.6561111 | 239 | 2692 |
| Toberdaly Bridge | city | County Offaly | Ireland | 53.3313889 | -7.2136111 | 390 | 2651 |
| Togher | city | County Offaly | Ireland | 53.3386111 | -7.2425 | 475 | 2686 |
| Trimblestown Bridge | city | County Offaly | Ireland | 53.3422222 | -7.1330556 | 364 | 2819 |
| Tulach Mhor | city | County Offaly | Ireland | 53.2738889 | -7.4888889 | 239 | 2665 |
| Tulach Mhór | city | County Offaly | Ireland | 53.2738889 | -7.4888889 | 239 | 2665 |
| Tullamore | city | County Offaly | Ireland | 53.2738889 | -7.4888889 | 239 | 2665 |
|
|