O
- (Chortkiv Raion) Oryshkivtsi
- (Kremenets Raion) Obych
- (Kremenets Raion) Oderaduvka
- (Ternopil Raion) Okhrymivtsi
- (Chortkiv Raion) Okno
- (Chortkiv Raion) Oleksyntsi
- (Chortkiv Raion) Olesha
- (Ternopil Raion) Olesino
- (Ternopil Raion) Oliiv
- (Ternopil Raion) Ol’shamazhur
- (Kremenets Raion) Onyshkivtsi
- (Ternopil Raion) Orekhovets
- (Ternopil Raion) Oprilivtsi
- (Kremenets Raion) Orishkovtsy
- (Kremenets Raion) Osnyky
- (Chortkiv Raion) Osovtsy
- (Chortkiv Raion) Osovtsy
- (Ternopil Raion) Ostapovo
- (Ternopil Raion) Ostashevtsy
- (Ternopil Raion) Ostrovets
- (Ternopil Raion) Ostruv
- (Chortkiv Raion) Ozeriany
- (Chortkiv Raion) Ozeriany
- (Ternopil Raion) Ozerna