Y
- (Chōsei-gun) Yamadayatsu
- (Chōsei-gun) Yaita
- (Isumi-gun) Yakoe
- (Isumi-gun) Yotsuna
- (Chōsei-gun) Yonemichi
- (Sodegaura-shi) Yonada
- (Sodegaura-shi) Yamanaka
- (Sodegaura-shi) Yanaka
- (Sodegaura-shi) Yarimizu
- (Sodegaura-shi) Yoshinoda
- (Kisarazu Shi) Yabu
- (Kisarazu Shi) Yuna
- (Kisarazu Shi) Yatsu
- (Kisarazu Shi) Yoshinoyatsu
- (Kisarazu Shi) Yamamoto-nanamagari
- (Ichihara Shi) Yūshūdai-higashi
- (Ichihara Shi) Yūshūdai-nishi
- (Ichihara Shi) Yanagihara
- (Ichihara Shi) Yamaguchi
- (Ichihara Shi) Yōrō
- (Ichihara Shi) Yamakogawa
- (Ichihara Shi) Yata
- (Ichihara Shi) Yabu
- (Ichihara Shi) Yonezawa
- (Ichihara Shi) Yamada
- (Ichihara Shi) Yamakura
- (Chōsei-gun) Yamane
- (Chōsei-gun) Yamanogō
- (Chōsei-gun) Yamauchi
- (Chōsei-gun) Yuyakami