Om
- Ōmachi, Nagano
- Ōmachi, Saga
- Omaezaki, Shizuoka
- Ōmagari, Akita
- Ōme, Tokyo
- Omogo, Ehime
- Ōmi Province
- Ōmihachiman, Shiga
- Ōmishima, Ehime
- Ōmisoka
- Omiya, Mie
- Ōmiya-ku, Saitama
- Omoikane (Shinto)
- Ōmura, Nagasaki
- Ōmura Masujirō
- Omuta, Fukuoka
Read more about this topic: Index Of Japan-related Articles (O)