| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Obo | city | Province of Masbate | Philippines | 11.9555556 | 123.1658333 | 167 | 4610 |
| Old Mobo | city | Province of Masbate | Philippines | 12.3333333 | 123.6666667 | 72 | 17323 |
| Omidep | city | Province of Masbate | Philippines | 12.2563889 | 123.6094444 | 331 | 35778 |
| Osmena | city | Province of Masbate | Philippines | 13.1333333 | 122.9833333 | 160 | 7629 |
| Osmena | city | Province of Masbate | Philippines | 12.7313889 | 123.3322222 | 311 | 5111 |
| Osmeña | city | Province of Masbate | Philippines | 13.1333333 | 122.9833333 | 160 | 7629 |
| Osmeña | city | Province of Masbate | Philippines | 12.7313889 | 123.3322222 | 311 | 5111 |
| Otod | city | Province of Masbate | Philippines | 12.0366667 | 123.3011111 | 0 | 5682 |
| Oyango | city | Province of Masbate | Philippines | 12.695 | 123.8883333 | 39 | 41990 |
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