Japón

Ō

• (Kawasaki-shi) Ōkawachō
• (Itoigawa Shi) Ōmi
• (Ise-shi) Ōminatomachi
• (Naha Shi) Ōmine
• (Shioya-gun) Ōmiya
• (Fujinomiya Shi) Ōmiyachō
• (Ōta-ku) Ōmorinaka
• (Ōta-shi) Ōmorichō
• (Agatsuma-gun) Ōmura
• (Shimajiri-gun) Ōna
• (Takaoka-gun) Ōno
• (Sumoto Shi) Ōno

O

• (Ashikaga Shi) Omatachō
• (Hōsu Gun) Omata
• (Murakami Shi) Omata
• (Toyama Shi) Omi
• (Hōsu Gun) Omou
• (Ōshima-gun) Omonawa
• (Maebashi Shi) Omotechō
• (Shōbara-shi) Omotegawa
• (Minamikoma-gun) Omurozawa
• (Tsuruoka Shi) Onabe
• (Tomigusuku-shi) Onaga
• (Kure-shi) Ondo
• (Amakusa Shi) Oniki
• (Fujioka Shi) Onishi
• (Nakagami-gun) Ogidō
• (Oga-shi) Onnagawa
• (Tanabe-shi) Ono
• (Myōzai Gun) Ono