| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Onara | city | Mahajanga | Madagascar | -17.15 | 44.20 | 6 | 593 |
| Onaramaty | city | Mahajanga | Madagascar | -17.11 | 44.15 | 3 | 318 |
| Orarikely | city | Mahajanga | Madagascar | -14.66 | 47.75 | 830 | 1450 |
| Ovaribe | city | Mahajanga | Madagascar | -14.66 | 47.74 | 830 | 1421 |
| Ovarikely | city | Mahajanga | Madagascar | -14.66 | 47.75 | 830 | 1450 |