| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Odlumon | city | Province of Negros Oriental | Philippines | 9.3 | 123.1833333 | 3008 | 24190 |
| Okiot | city | Province of Negros Oriental | Philippines | 9.5666667 | 123.1666667 | 0 | 6061 |
| Olay | city | Province of Negros Oriental | Philippines | 10.3597222 | 123.2975 | 164 | 27618 |
| Old Tolong | city | Province of Negros Oriental | Philippines | 9.3461111 | 122.8297222 | 26 | 9871 |
| Olimbo | city | Province of Negros Oriental | Philippines | 9.4666667 | 122.7666667 | 688 | 19556 |
| Olimpia | city | Province of Negros Oriental | Philippines | 9.6183333 | 123.1455556 | 0 | 11458 |
| Omanod | city | Province of Negros Oriental | Philippines | 9.1672222 | 122.9058333 | 262 | 9040 |
| Omauas | city | Province of Negros Oriental | Philippines | 9.7016667 | 123.1 | 984 | 22704 |
| Omod | city | Province of Negros Oriental | Philippines | 9.4069444 | 122.8691667 | 360 | 18378 |
| Opao | city | Province of Negros Oriental | Philippines | 9.505 | 123.1575 | 13 | 24844 |
| Otcoton | city | Province of Negros Oriental | Philippines | 10.2336111 | 123.3158333 | 0 | 17522 |
| Owacan | city | Province of Negros Oriental | Philippines | 10.0333333 | 123.15 | 1197 | 38826 |