Y
- (Isumi Shi) Yatsuhori
- (Isumi Shi) Yamada
- (Isumi Shi) Yamada-rokuku
- (Isumi Shi) Yasaka
- (Isumi Shi) Yaotome
- (Isumi Shi) Yokohara
- (Isumi Shi) Yokojuku
- (Isumi Shi) Yamada-goku
- (Isumi Shi) Yamada-yonku
- (Isumi Shi) Yamada-sanku
- (Isumi Shi) Yamada-niku
- (Isumi Shi) Yamada-ikku
- (Isumi Shi) Yamasa
- (Isumi Shi) Yokojuku
- (Isumi Shi) Yadama
- (Isumi Shi) Yamazaki
- (Chōsei-gun) Yuzunoki
- (Chōsei-gun) Yasaka
- (Chōsei-gun) Yabata
- (Chōsei-gun) Yabutsuka
- (Chōsei-gun) Yamanaka
- (Mobara Shi) Yumiwatashi
- (Mobara Shi) Yawatabara
- (Mobara Shi) Yachiyo
- (Mobara Shi) Yamoto
- (Mobara Shi) Yoshiishimo
- (Mobara Shi) Yoshiikami
- (Chōsei-gun) Yajiri
- (Mobara Shi) Yamasaki
- (Mobara Shi) Yagyū