O
Ō
- (Ichikawa Shi) Ōwada
- (Ichikawa Shi) Ōsu
- (Matsudo Shi) Ōhashi
- (Matsudo Shi) Ōganedaira
- (Matsudo Shi) Ōyaguchi
- (Nagareyama-shi) Ōguro
- (Kashiwa Shi) Ōtsukachō
- (Kashiwa Shi) Ōmuro
- (Kashiwa Shi) Ōmiya
- (Kashiwa Shi) Ōaota
- (Noda-shi) Ōsaki
- (Noda-shi) Ōwada
- (Noda-shi) Ōdonoi
- (Ichikawa Shi) Ōmachi
- (Ichikawa Shi) Ōnomachi
- (Sodegaura-shi) Ōnodai
- (Kisarazu Shi) Ōkubo
- (Kisarazu Shi) Ōda
- (Kisarazu Shi) Ōtera
- (Kimitsu Shi) Ōwada
- (Kimitsu Shi) Ōwashi
- (Kimitsu Shi) Ōyatsu