| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Gahagan's Village | city | County Offaly | Ireland | 53.2877778 | -7.9052778 | 193 | 2654 |
| Gahaganʼs Village | city | County Offaly | Ireland | 53.2877778 | -7.9052778 | 193 | 2654 |
| Galros | city | County Offaly | Ireland | 53.2233333 | -7.9061111 | 242 | 2657 |
| Galros Cross Roads | city | County Offaly | Ireland | 53.1558333 | -7.8827778 | 229 | 2669 |
| Garr | city | County Offaly | Ireland | 53.3927778 | -7.2105556 | 419 | 2852 |
| Geashill | city | County Offaly | Ireland | 53.2352778 | -7.32 | 275 | 2664 |
| Geisill | city | County Offaly | Ireland | 53.2352778 | -7.32 | 275 | 2664 |
| Glasshouse | city | County Offaly | Ireland | 53.2422222 | -7.6175 | 249 | 2661 |
| Glaster | city | County Offaly | Ireland | 53.1430556 | -7.9880556 | 193 | 2709 |
| Glenletter | city | County Offaly | Ireland | 53.0986111 | -7.6458333 | 987 | 2695 |
| Goldsmithslot | city | County Offaly | Ireland | 53.2877778 | -7.6586111 | 229 | 2654 |
| Gortarevan | city | County Offaly | Ireland | 53.1702778 | -8.0219444 | 187 | 2695 |
| Gorteen Bridge | city | County Offaly | Ireland | 53.2025 | -7.4883333 | 341 | 2718 |
| Gorteenkeel | city | County Offaly | Ireland | 53.2558333 | -7.2738889 | 278 | 2654 |
| Grogan | city | County Offaly | Ireland | 53.3236111 | -7.6980556 | 226 | 2665 |
| Géisill | city | County Offaly | Ireland | 53.2352778 | -7.32 | 275 | 2664 |
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