Japón

O

• (Yokosuka Shi) Ogino
• (Kamakura Shi) Onarimachi
• (Yokosuka Shi) Obaradai
• (Iwafune-gun) Omi
• (Sendai) Okada
• (Sendai) Oroshimachi
• (Sado Shi) Onomi
• (Takayama Shi) Okuhida-onsengō-nakao
• (Takayama Shi) Okuhida-onsengō-tochio
• (Takayama Shi) Okuhida-onsengō-imami
• (Higashichikuma Gun) Odatsuno

Ō

• (Yokosuka Shi) Ōtawa
• (Kamakura Shi) Ōgigayatsu
• (Kamakura Shi) Ōmachi
• (Yokosuka Shi) Ōyabe
• (Iwafune-gun) Ōishi
• (Murakami Shi) Ōkurida
• (Murakami Shi) Ōbazawa
• (Murakami Shi) Ōdai
• (Yokosuka Shi) Ōtsuchō
• (Kami-gun) Ōjōji
• (Tsuruoka Shi) Ōiwagawa
• (Murakami Shi) Ōtsuki
• (Tome Shi) Ōtsunagi
• (Ōmachi-shi) Ōsaki
• (Itoigawa Shi) Ōno
• (Shimoniikawa Gun) Ōienoshō
• (Higashichikuma Gun) Ōhinata
• (Nagano Shi) Ōoka-otsu
• (Nagano Shi) Ōoka-hei