Ukrajina - Zoznam miest na písmeno O
- Obertyn
- Obodivka
- Obroshyne
- Obukhiv
- Ochakiv
- Odessa
- Okhotnikovo
- Okhotskoye
- Okhtyrka
- Okny
- Oktyabr'skoye
- Oktyabr’skoye
- Okunevka
- Ol'shanskoye
- Oleksandrivka
- Oleksandriya
- Oleksandriys’ke
- Olenevka
- Oleshnyk
- Olesko
- Olevs’k
- Olyka
- Olyshivka
- Onokivtsi
- Onufriyivka
- Oposhnya
- Orativ
- Ordzhonikidze
- Orekhovo
- Orikhiv
- Orlinoye
- Orlovskoye
- Orzhiv
- Orzhytsya
- Ostanino
- Oster
- Ostroh
- Ostrovskoye
- Osypenko
- Otyniya
- Ovidiopol
- Ovruch
- Ozerna
- Ozerne