Ucrania
Munduko herrialdeak
O
- Odesa
- Oleksandriya
- Okhtyrka
- Obukhiv
- (Korosten' Raion) Ovruch
- (Rivnenska Miskrada) Ostroh
- Orikhiv
- Ochakiv
- (Odeskyi Raion) Ovidiopol
- (Chernivestkyi Raion) Oprysheny
- (Dnipro rural raion) Obukhivka
- Oleksandrivka
- (Odeskyi Raion) Oleksandrivka
- (Zhytomyr Raion) Ozerne
- (Chernihiv Raion) Oster
- Ostër
- (Kolomyya Raion) Otyniia
- (Izmail Raion) Ozerne
- (Poltava Raion) Opishnya
- (Voznesensk Raion) Oleksandrivka
- (Oleksandriya Raion) Oleksandriyske
- (Berehove Raion) Oleshnyk
- (Berdyansk Raion) Osypenko
- (Kalmiuskyi Raion) Olenivka
- (Lvivskyi Raion) Obroshyne
- (Rivnenska Miskrada) Orzhiv
- (Chernivestkyi Raion) Ostrytsya
- Onufriyivka
- (Rivnenska Miskrada) Orzhiv
- (Odeskyi Raion) Oleksandrivka