| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Oac | city | Province of Cebu | Philippines | 10.55 | 123.7 | 9 | 2970 |
| Oac | city | Province of Bohol | Philippines | 9.6813889 | 124.1122222 | 971 | 24466 |
| Oac | city | Province of Bohol | Philippines | 9.6666667 | 124.1333333 | 1158 | 23548 |
| Oaig Daya | city | Province of Ilocos Sur | Philippines | 17.1833333 | 120.45 | 36 | 40620 |
| Oal | city | Province of Sultan Kudarat | Philippines | 6.1930556 | 124.2263889 | 36 | 5365 |
| Oalao | city | Province of South Cotabato | Philippines | 5.8711111 | 124.8991667 | 3 | 2764 |
| Oalin | city | Province of Ilocos Sur | Philippines | 17.25 | 120.5166667 | 255 | 25542 |
| Oaqui | city | Province of La Union | Philippines | 16.8586111 | 120.4202778 | 236 | 55373 |
| Oaquing | city | Province of La Union | Philippines | 16.6666667 | 120.3333333 | 242 | 19660 |
| Oara | city | Province of Mindoro Oriental | Philippines | 12.3047222 | 121.2713889 | 538 | 9768 |
| Oas | city | Province of Albay | Philippines | 13.2588889 | 123.4952778 | 78 | 50563 |
| Oasay | city | Angeles City | Philippines | 13.2638889 | 122.5219444 | 111 | 9466 |
| Oayangan | city | Province of Abra | Philippines | 17.2594444 | 120.7077778 | 1092 | 5055 |
|
|