I
- (Ishinomaki Shi) Iwaida
- (Kesennuma Shi) Isokusa
- (Kesennuma Shi) Isozawa
- (Kesennuma Shi) Iwatsuki-hōkisawa
- (Kesennuma Shi) Iwatsuki-senganda
- (Kesennuma Shi) Iwatsuki-terasawa
- (Kesennuma Shi) Iwatsuki-takaragasawa
- (Kesennuma Shi) Iwatsuki-hoshiya
- (Kesennuma Shi) Iwatsuki-dainosawa
- (Kesennuma Shi) Iwatsuki-nagadaira
- (Oshika Gun) Iigohama
- (Ishinomaki Shi) Iwaihama
- (Oshika Gun) Ishihama
- (Oshika Gun) Inodoshi
- (Ōsaki Shi) Iwadeyama
- (Ishinomaki Shi) Iri
- (Ishinomaki Shi) Ishizaki
- (Ishinomaki Shi) Izumichō
- (Ishinomaki Shi) Ichibanyachi
- (Ishinomaki Shi) Ikehama
- (Ōsaki Shi) Irisawa
- (Ōsaki Shi) Iwabuchi
- (Ishinomaki Shi) Iwasaki
- (Oshika Gun) Izushima
- (Tome Shi) Ishikoshimachi-kitagō
- (Tome Shi) Iwanosawa
- (Kurihara Shi) Izumiya
- (Kurihara Shi) Ichihasama
- (Kesennuma Shi) Ishihama
- (Sendai) Iwakiri