O
- (Bakhmut Raion) Opytne
- (Kramatorskyi Raion) Oleksandrivka
- (Kramatorskyi Raion) Oleksandrivka
- (Kramatorskyi Raion) Oleksandrivka
- (Donetskyi Raion) Oleksandrivka
- (Kalmiuskyi Raion) Oleksandrivka
- (Kramatorskyi Raion) Oleksandro-Shultyne
- (Kramatorskyi Raion) Oleksandropil
- (Kramatorskyi Raion) Oleksandro-Kalynove
- (Volnovakha Raion) Oleksandrohrad
- (Kalmiuskyi Raion) Oleksandrivs'ke
- (Donetskyi Raion) Obrizne
- (Horlivskyi Raion) Oleksandrivske
- (Bakhmut Raion) Odradivka
- (Donetskyi Raion) Oleksiivske
- (Pokrovsk Raion) Oleksandropil
- (Pokrovsk Raion) Orlivka
- (Pokrovsk Raion) Opytne
- (Kramatorskyi Raion) Oleksandrivka
- (Kramatorskyi Raion) Osykove
- (Kramatorskyi Raion) Ozarianivka
- (Horlivskyi Raion) Orikhove
- (Donetskyi Raion) Ovocheve
- (Mariupolskyi Raion) Orlivske
- (Volnovakha Raion) Obilne
- (Mariupolskyi Raion) Ohorodnie
- (Volnovakha Raion) Odradne
- (Donetskyi Raion) Olinske
- (Kalmiuskyi Raion) Oleksandropil
- (Horlivskyi Raion) Ozerianivka