Ō
- (Chōsei-gun) Ōmura
- (Chōsei-gun) Ōtsubo-tōbu
- (Chōsei-gun) Ōtsubo-seibu
- (Chōsei-gun) Ōmura
- (Chōsei-gun) Ōmura
- (Mobara Shi) Ōmura
- (Mobara Shi) Ōshiba
- (Mobara Shi) Ōhigashi
- (Mobara Shi) Ōsawa
- (Mobara Shi) Ōnobori
- (Chōsei-gun) Ōyagi
- (Chōsei-gun) Ōgami
- (Chōsei-gun) Ōi
- (Sodegaura-shi) Ōwada
- (Sodegaura-shi) Ōtorii
- (Sodegaura-shi) Ōhara-shinden
- (Sodegaura-shi) Ōtake