| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Onaha | city | Okinawa | Japan | 26.22 | 127.77 | 3 | 218837 |
| Onahama | city | Fukushima | Japan | 36.95 | 140.90 | 3 | 47305 |
| Onahara | city | Kumamoto | Japan | 32.41 | 130.63 | 984 | 11420 |
| Onahenene | city | Oshikoto | Namibia | -18.17 | 16.45 | 3635 | 2288 |
| Onahi | city | Oshikoto | Namibia | -18.27 | 16.28 | 3582 | 1490 |
| Onahima | city | Oshikoto | Namibia | -17.75 | 16.07 | 3556 | 3554 |
| Onahio | city | Goh-Djiboua | Cote D'Ivoire (Ivory Coast) | 6.27 | -6.30 | 830 | 5670 |
| Onahio | city | Goh-Djiboua | Cote D'Ivoire (Ivory Coast) | 6.02 | -6.25 | 830 | 5656 |
| Onaholm | city | Varmland | Sweden | 59.07 | 12.82 | 160 | 875 |