| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Ongatsy | city | Fianarantsoa | Madagascar | -22.41 | 47.90 | 26 | 14029 |
| Oninarivo | city | Fianarantsoa | Madagascar | -21.39 | 46.05 | 2509 | 209 |
| Onisoa | city | Fianarantsoa | Madagascar | -21.50 | 46.02 | 2732 | 206 |
| Onjatsy | city | Fianarantsoa | Madagascar | -22.41 | 47.90 | 26 | 14029 |