Y
- Yagami Castle, Sasayama, Hyōgo
- Yamagata Castle, Yamagata, Yamagata
- Yamanaka Castle, Mishima, Shizuoka
- Yatsushiro Castle, Yatsushiro, Kumamoto
- Yodo Castle, Kyoto
- Yokote Castle, Yokote, Akita
- Yonezawa Castle, Yonezawa, Yamagata
- Yoshida Castle, Toyohashi, Aichi
- Yuzuki Castle, Matsuyama, Ehime
Read more about this topic: List Of Castles In Japan