| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Oga | city | Italy | 46.47 | 10.35 | 3782 | 4283 | |
| Oggiaro | city | Italy | 45.48 | 9.18 | 360 | 629996 | |
| Oggiono | city | Italy | 45.78 | 9.33 | 941 | 57858 | |
| Oglianico | city | Italy | 45.35 | 7.68 | 1023 | 29526 | |
| Ogliastro | city | Italy | 40.35 | 15.05 | 1243 | 23033 | |
| Ogliastro Cilento | city | Italy | 40.35 | 15.05 | 1243 | 23033 | |
| Ogna | city | Italy | 45.90 | 9.93 | 2388 | 16777 | |
| Ognissanti | city | Italy | 45.12 | 10.22 | 85 | 6457 |