O
- (Stryys’ka Mis’krada) Ostriv
- (Yavorivskyi Raion) Ostrozhets
- (Zolochivskyi Raion) Ostrovchik Polny
- (Sambirs’ka Mis’krada) Ostrov
- (Yavorivskyi Raion) Ostra Gora
- (Chervonohradskyi Raion) Ostrivok
- (Zolochivskyi Raion) Ostapkovtse
- (Lvivskyi Raion) Ostalovychi
- (Lvivskyi Raion) Osichina
- (Stryys’ka Mis’krada) Oriava
- (Drohobytskyi Raion) Oriv
- (Zolochivskyi Raion) Olesko
- (Lvivskyi Raion) Obroshyne