| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Old Angadanan | city | Province of Nueva Vizcaya | Philippines | 16.5044444 | 121.2311111 | 823 | 67592 |
| Olioeg | city | Province of Nueva Vizcaya | Philippines | 16.4 | 120.95 | 4022 | 6636 |
| Oplas | city | Province of Nueva Vizcaya | Philippines | 16.4 | 121.0166667 | 2303 | 15474 |
| Orioung | city | Province of Nueva Vizcaya | Philippines | 16.6333333 | 121.35 | 921 | 18309 |
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