| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Ouaka | city | Region de la Bouenza | Congo | -3.7436111 | 13.5905556 | 1282 | 990 |
| Oualala | city | Region du Pool | Congo | -4.3202778 | 14.4511111 | 1679 | 2239 |
| Ouanda | city | Region du Pool | Congo | -3.4061111 | 14.3488889 | 1998 | 509 |
| Ouanda | city | Region du Pool | Congo | -4.3108333 | 14.6755556 | 1676 | 2991 |
| Ouanda | city | Region du Pool | Congo | -4.5219444 | 14.7119444 | 1860 | 1657 |
| Ouanda | city | Region du Pool | Congo | -4.3791667 | 14.7944444 | 1272 | 3045 |
| Ouanda | city | Region du Pool | Congo | -4.4277778 | 14.8147222 | 1240 | 2617 |
| Ouanda-Mpassa | city | Region du Pool | Congo | -3.3861111 | 14.275 | 1827 | 509 |
| Ouando | city | Region de la Cuvette | Congo | -0.4869444 | 15.9080556 | 1069 | 420 |
| Ouandotanda | city | Region de la Cuvette | Congo | -0.7372222 | 15.8205556 | 1246 | 420 |
| Ouandzi | city | Region de la Lekoumou | Congo | -3.4622222 | 13.2816667 | 1482 | 672 |
| Ouannaga | city | Region des Plateaux | Congo | -1.6716667 | 14.945 | 1541 | 241 |
| Ouaoua | city | Region du Pool | Congo | -4.4325 | 14.8322222 | 1230 | 2617 |
| Oubouesse | city | Region du Niari | Congo | -2.8558333 | 12.6602778 | 1788 | 770 |
| Oubouéssé | city | Region du Niari | Congo | -2.8558333 | 12.6602778 | 1788 | 770 |
| Oudiomakobo | city | Region du Niari | Congo | -2.5158333 | 11.6866667 | 1692 | 773 |
| Oudji | city | Region de la Cuvette | Congo | -0.9841667 | 14.7313889 | 1863 | 397 |
| Oudzima | city | Region de la Cuvette | Congo | -0.1377778 | 16.0419444 | 1099 | 345 |
| Oueka | city | Region du Kouilou | Congo | -4.5555556 | 11.8063889 | 3 | 21709 |
| Ouendze | city | Region des Plateaux | Congo | -2.3572222 | 15.3066667 | 2293 | 182 |
| Ouennza | city | Region de la Likouala | Congo | -0.3480556 | 17.6886111 | 1076 | 315 |
| Ouenze | city | Region de la Cuvette | Congo | 0.0194444 | 15.6111111 | 1079 | 336 |
| Ouenzia | city | Region du Pool | Congo | -3.9763889 | 15.7458333 | 938 | 17358 |
| Ouenzé | city | Region de la Cuvette | Congo | 0.0194444 | 15.6111111 | 1079 | 336 |
| Ouesso | city | Region de la Sangha | Congo | 1.6136111 | 16.0516667 | 1118 | 114 |
| Ouesso-Bila | city | Region de la Sangha | Congo | 1.2175 | 15.795 | 1161 | 103 |
| Ouesso-Mbila | city | Region de la Sangha | Congo | 1.2175 | 15.795 | 1161 | 103 |
| Ouesso-Moke | city | Region de la Sangha | Congo | 2 | 14.9666667 | 1341 | 232 |
| Ouinga | city | Region du Kouilou | Congo | -4.9111111 | 12.0744444 | 98 | 28988 |
| Oukebene | city | Region du Niari | Congo | -3.5333333 | 12.1 | 974 | 742 |
| Oukebeni | city | Region du Niari | Congo | -3.5333333 | 12.1 | 974 | 742 |
| Oukébéné | city | Region du Niari | Congo | -3.5333333 | 12.1 | 974 | 742 |
| Oundjadoumou | city | Region de la Cuvette | Congo | 0.0538889 | 14.8891667 | 1397 | 144 |
| Ounza | city | Region de la Cuvette | Congo | -0.0177778 | 15.6875 | 1072 | 336 |
| Ououa | city | Region de la Cuvette | Congo | -1.0761111 | 14.8941667 | 1774 | 381 |
| Ourombi | city | Region de la Cuvette | Congo | -0.1844444 | 17.1075 | 1122 | 170 |
| Ouroum | city | Region de la Cuvette | Congo | -0.1844444 | 17.1075 | 1122 | 170 |
| Ourumbi | city | Region de la Cuvette | Congo | -0.1844444 | 17.1075 | 1122 | 170 |
| Oussi | city | Region de la Likouala | Congo | 2.3666667 | 18 | 1197 | 131 |
| Oussoumba-Issongue | city | Region de la Cuvette | Congo | 0.1030556 | 15.5658333 | 1122 | 336 |
| Oussoumba-Issongué | city | Region de la Cuvette | Congo | 0.1030556 | 15.5658333 | 1122 | 336 |
| Outa Ingama | city | Region de la Lekoumou | Congo | -2.9233333 | 13.8591667 | 1991 | 406 |
| Ouéka | city | Region du Kouilou | Congo | -4.5555556 | 11.8063889 | 3 | 21709 |
| Ouéndzé | city | Region des Plateaux | Congo | -2.3572222 | 15.3066667 | 2293 | 182 |
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