| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Oga | city | | Italy | 46.4666667 | 10.35 | 3782 | 5914 |
| Oggiaro | city | | Italy | 45.4833333 | 9.1833333 | 360 | 149842 |
| Oggiono | city | | Italy | 45.7833333 | 9.3333333 | 941 | 51007 |
| Oglianico | city | | Italy | 45.35 | 7.6833333 | 1023 | 34459 |
| Ogliano | city | Veneto | Italy | 45.9155556 | 12.3141667 | 236 | 32225 |
| Ogliastro | city | | Italy | 40.35 | 15.05 | 1243 | 25217 |
| Ogliastro Cilento | city | | Italy | 40.35 | 15.05 | 1243 | 25217 |
| Ogna | city | | Italy | 45.9 | 9.9333333 | 2388 | 35579 |
| Ognissanti | city | | Italy | 45.1166667 | 10.2166667 | 85 | 19855 |
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