Cities in Ukraine ( 978 )
- Novyy Buh
- Novyy Starodub
- Novyy Svit
- Novyy Yarychiv
- Nyzhni Sirohozy
- Nyzy
- Obertyn
- Obodivka
- Obroshyne
- Obukhiv
- Ochakiv
- Odesa
- Okhtyrka
- Okna
- Oleksandrivka
- Oleksandrivka, Kirovohrad Oblast
- Oleksandriya
- Olenevka
- Olshanskiy
- Olyka
- Onufriyivka
- Oposhnya
- Orativ
- Ordzhonikidze
- Orikhiv
- Orikhove
- Orzhiv
- Orzhytsya
- Ostër
- Ostroh
- Osypenko, Berdyansk Raion
- Otyniya
- Ovidiopol
- Ovruch
- Ozerne, Odessa Oblast
- Ozerne, Zhytomyr Oblast