| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Onen | city | Anambra | Nigeria | 5.99 | 7.15 | 830 | 54737 |
| Onen Svět | city | Plzensky Kraj | Czech Republic | 49.23 | 13.28 | 2545 | 2980 |
| Onenai | city | Hokkaido | Japan | 43.30 | 140.37 | 830 | 677 |
| Oneng | city | Aceh | Indonesia | 4.03 | 97.34 | 3349 | 998 |
| Oneng | city | Aceh | Indonesia | 4.17 | 97.14 | 5029 | 1017 |
| Onengali | city | Ohangwena | Namibia | -17.40 | 15.93 | 3599 | 32709 |
| Onengué-Kaha | city | Vallee du Bandama | Cote D'Ivoire (Ivory Coast) | 8.47 | -5.30 | 997 | 1030 |
| Onenoa | city | American Samoa | United States | -14.26 | -170.58 | 3 |