O
- (Koundara Prefecture) Oulandji
- (Koundara Prefecture) Oré Korassé
- (Koundara Prefecture) Orévenndou
- (Koundara Prefecture) Orévenndou
- (Gaoual Prefecture) Oré Yamé
- (Koundara Prefecture) Ouadiatoulaye
- (Koundara Prefecture) Ouakan
- (Koundara Prefecture) Ouambou
- (Gaoual Prefecture) Ouantan
- (Boke Prefecture) Ouassou
- (Koundara Prefecture) Oudaba
- (Koundara Prefecture) Oudaya
- (Koundara Prefecture) Oukégué
- (Koundara Prefecture) Ouzou
- (Koundara Prefecture) Oundagne
- (Boke Prefecture) Oundouféré
- (Koundara Prefecture) Oungwariel
- (Telimele Prefecture) Ounsiré Bourédi
- (Gaoual Prefecture) Oupirdé
- (Koundara Prefecture) Ourak
- (Koundara Prefecture) Ourakaré
- (Koundara Prefecture) Ourouss
- (Koundara Prefecture) Outirak
- (Koundara Prefecture) Ouyane
- (Koundara Prefecture) Ouzik