Ō
- (Futtsu Shi) Ōtawa
- (Futtsu Shi) Ōshiro
- (Futtsu Shi) Ōkamado
- (Futtsu Shi) Ōsawa
- (Minamibōsō Shi) Ōtsuka
- (Minamibōsō Shi) Ōsawa
- (Minamibōsō Shi) Ōgakuchi
- (Minamibōsō Shi) Ōyatsu
- (Minamibōsō Shi) Ōnuma
- (Minamibōsō Shi) Ōhara
- (Minamibōsō Shi) Ōmine
- (Minamibōsō Shi) Ōhata
- (Minamibōsō Shi) Ōkawa
- (Minamibōsō Shi) Ōi
- (Minamibōsō Shi) Ōgami
- (Tateyama-shi) Ōshiba
- (Tateyama-shi) Ōi
- (Kamogawa-shi) Ōyama
- (Kamogawa-shi) Ōhata