O
- (Lubny Raion) Oleksiivka
- (Poltava Raion) Okhoche
- (Poltava Raion) Opishniany
- (Kremenchuk Raion) Oleksandrivka
- (Kremenchuk Raion) Ostaptsi
- (Kremenchuk Raion) Onyshchenky
- (Poltava Raion) Onyshchenky
- (Poltava Raion) Oliinyky
- (Kremenchuk Raion) Omelnyne
- (Kremenchuk Raion) Olhivka
- (Kremenchuk Raion) Oleksandriia
- (Poltava Raion) Ozera
- (Lubny Raion) Ovsiuky
- (Poltava Raion) Ostapie
- (Myrhorod Raion) Ostapivka
- (Lubny Raion) Ostapivka
- (Lubny Raion) Ostapovka
- (Lubny Raion) Ostapenky
- (Lubny Raion) Osniah
- (Kremenchuk Raion) Osnachi
- (Poltava Raion) Orlyk
- (Lubny Raion) Orikhivka
- (Poltava Raion) Ordanivka
- (Kremenchuk Raion) Opryshky
- (Lubny Raion) Onyshky
- (Kremenchuk Raion) Omelnyk
- (Kremenchuk Raion) Olenivka
- (Poltava Raion) Olenikovka
- (Myrhorod Raion) Olefirivka
- (Lubny Raion) Okip