Y
- (Minamibōsō Shi) Yoshii
- (Minamibōsō Shi) Yatsu
- (Futtsu Shi) Yamairi
- (Futtsu Shi) Yatanuma
- (Futtsu Shi) Yachigai
- (Futtsu Shi) Yakeyama
- (Futtsu Shi) Yokomine
- (Futtsu Shi) Yokoyama
- (Futtsu Shi) Yamawaki
- (Futtsu Shi) Yamanaka
- (Futtsu Shi) Yamairi
- (Futtsu Shi) Yatsubo
- (Minamibōsō Shi) Yamazaki
- (Minamibōsō Shi) Yoshizawa
- (Minamibōsō Shi) Yonezawa
- (Minamibōsō Shi) Yamukai
- (Minamibōsō Shi) Yamana
- (Minamibōsō Shi) Yamashita
- (Minamibōsō Shi) Yata
- (Minamibōsō Shi) Yoshino
- (Minamibōsō Shi) Yazu
- (Minamibōsō Shi) Yamada
- (Tateyama-shi) Yokomine
- (Tateyama-shi) Yawata
- (Tateyama-shi) Yokomakura
- (Kamogawa-shi) Yasukurayatsu
- (Katsuura-shi) Yoshio
- (Isumi Shi) Yatsubata
- (Isumi Shi) Yasashido
- (Isumi Shi) Yashiki-shimo