| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Odoua | city | Brazzaville | Congo | -3.89 | 15.29 | 1817 | 5513 |
| Oka | city | Brazzaville | Congo | -3.67 | 15.38 | 2086 | 5513 |
| Oka | city | Brazzaville | Congo | -3.58 | 15.25 | 2024 | 4223 |
| Ongéne | city | Brazzaville | Congo | -3.62 | 15.23 | 2024 | 3626 |
| Ouenzia | city | Brazzaville | Congo | -3.98 | 15.75 | 938 | 4454 |
| Oye | city | Brazzaville | Congo | -3.92 | 15.40 | 2509 | 5513 |