| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Old Grand Port | city | Grand Port | Mauritius | -20.37 | 57.71 | 830 | 31465 |
| Oliva | city | Flacq | Mauritius | -20.30 | 57.73 | 324 | 33453 |
| Olivia | city | Flacq | Mauritius | -20.30 | 57.73 | 324 | 33453 |
| Oyster Bay | city | Rodrigues | Mauritius | -19.69 | 63.41 | 830 | 8430 |