Japón

O

• (Ibi-gun) Otohara
• (Miyoshi-gun) Otokoyama
• (Tano-gun) Otomo
• (Izumo Shi) Ottachichō
• (Tahara-shi) Otto

Ō

• (Usuki Shi) Ōtomari
• (Nanao Shi) Ōtomarimachi
• (Sakai-shi) Ōtori-nishimachi
• (Tsuruoka Shi) Ōtori
• (Sakai-shi) Ōtori-higashimachi
• (Yasugi Shi) Ōtsukachō
• (Shōbara-shi) Ōtsuki
• (Miyakojima Shi) Ōura
• (Nago Shi) Ōura
• (Kimotsuki Gun) Ōura
• (Minamisatsuma Shi) Ōura
• (Isahaya-shi) Ōura
• (Kure-shi) Ōura
• (Nagato Shi) Ōura
• (Ōta-shi) Ōura
• (Arao Shi) Ōhiramachi
• (Niiza-shi) Ōwada
• (Nakagami-gun) Ōwan
• (Akumi-gun) Ōwarabioka
• (Nakaōnuma-gun) Ōwarino
• (Hokuto-shi) Ōwatari
• (Higashimuro-gun) Ōshima
• (Minamishimabara-shi) Ōya
• (Toyama Shi) Ōshima
• (Ueda Shi) Ōya