| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Onahio | city | Goh-Djiboua | Cote D'Ivoire (Ivory Coast) | 6.27 | -6.30 | 830 | 5670 |
| Onahio | city | Goh-Djiboua | Cote D'Ivoire (Ivory Coast) | 6.02 | -6.25 | 830 | 5656 |
| Onayo | city | Goh-Djiboua | Cote D'Ivoire (Ivory Coast) | 6.27 | -6.30 | 830 | 5670 |
| Onayo | city | Goh-Djiboua | Cote D'Ivoire (Ivory Coast) | 6.02 | -6.25 | 830 | 5656 |
| Onengué-Kaha | city | Vallee du Bandama | Cote D'Ivoire (Ivory Coast) | 8.47 | -5.30 | 997 | 1030 |
| Oneohogo | city | Lagunes | Cote D'Ivoire (Ivory Coast) | 5.89 | -4.24 | 242 | 44125 |
| Ongourakro | city | Vallee du Bandama | Cote D'Ivoire (Ivory Coast) | 8.03 | -5.32 | 931 | 3008 |
| Oni-Babré | city | Goh-Djiboua | Cote D'Ivoire (Ivory Coast) | 6.17 | -5.96 | 830 | 87798 |
| Oni-Tabre | city | Goh-Djiboua | Cote D'Ivoire (Ivory Coast) | 6.18 | -5.96 | 830 | 73002 |
| Onioneouango | city | Comoe | Cote D'Ivoire (Ivory Coast) | 5.33 | -3.55 | 249 | 10288 |
| Ono | city | Comoe | Cote D'Ivoire (Ivory Coast) | 5.41 | -3.46 | 249 | 5109 |
| Ono | city | Comoe | Cote D'Ivoire (Ivory Coast) | 5.46 | -3.47 | 249 | 5120 |
| Ono | city | Cote D'Ivoire (Ivory Coast) | 5.13 | -3.15 | 236 | 3890 | |
| Ono Salci | city | Comoe | Cote D'Ivoire (Ivory Coast) | 5.38 | -3.57 | 242 | 5364 |
| Ony-Babre | city | Goh-Djiboua | Cote D'Ivoire (Ivory Coast) | 6.17 | -5.96 | 830 | 87798 |
| Ony-Tabré | city | Goh-Djiboua | Cote D'Ivoire (Ivory Coast) | 6.18 | -5.96 | 830 | 73002 |