Ō
- (Ōshū-shi) Ōkubo
- (Shimohei-gun) Ōsawa
- (Waga-gun) Ōta
- (Ōfunato-shi) Ōhama
- (Hanamaki Shi) Ōyachi
- (Hanamaki Shi) Ōdōri
- (Hanamaki Shi) Ōhata
- (Hanamaki Shi) Ōsawa
- (Kitakami-shi) Ōtake
- (Hanamaki Shi) Ōnishi
- (Hanamaki Shi) Ōkamizawa
- (Hanamaki Shi) Ōsawayama
- (Hanamaki Shi) Ōhazamamachi-kamegamori
- (Hanamaki Shi) Ōsawa
- (Rikuzentakata-shi) Ōyōsato
- (Rikuzentakata-shi) Ōyō
- (Rikuzentakata-shi) Ōkubo
- (Rikuzentakata-shi) Ōiwai