| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Ohia historical | city | Hawaii | United States | 19.58806 | -155.07833 | 862 | 4581 |
| Okoe historical | city | Hawaii | United States | 19.15444 | -155.91278 | 9 | 618 |
| Olokele | city | Hawaii | United States | 21.92222 | -159.62861 | 187 | 1001 |
| Olowalu | city | Hawaii | United States | 20.81472 | -156.625 | 0 | 6337 |
| Omao | city | Hawaii | United States | 21.9325 | -159.48917 | 538 | 8804 |
| Omaopio | city | Hawaii | United States | 20.8 | -156.32806 | 2427 | 11078 |
| Onomea historical | city | Hawaii | United States | 19.81667 | -155.10361 | 226 | 1953 |
| Ookala | city | Hawaii | United States | 20.0175 | -155.28722 | 567 | 117 |
| Opihikao | city | Hawaii | United States | 19.42972 | -154.88333 | 3 | 1008 |
| Orchidlands Estates | city | Hawaii | United States | 19.56333 | -155.01694 | 528 | 4879 |
| Orpheum Village | city | Hawaii | United States | 20.90306 | -156.37222 | 301 | 11690 |
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