- Ogawamachi-minamibeta
- Ogawamachi-minamishinden
- Ogawamachi-nakaono
- Ogawamachi-nishikaitō
- Ogawamachi-nishikitaogawa
- Ogawamachi-shinden
- Ogawamachi-shindende
- Ogawamachi-shiranui
- Ogawamachi-sumiyoshi
- Ogawanishi
- Oiwake
- Okadake
- Okidomo
- Omote-minamiogawa
- Omura
- Omura
- Ōno
- Ōnobashi
- Oroguchi
- Ōgitani
- Oike
- Okoshiki
- Okuratoko
- Obaru
- Obaru
- Obata
- Obatake
- Ōbayashi
- Odake
- Odorimachi