Nagamori Castle (長森城, Nagamori-jō) was a castle built in Mino Province, Japan, by Tosanobō Shōshun (土佐坊昌俊), in 1185, and lasted from the Heian period to the early Sengoku period. It is located in the Kiridōshi area of the city of Gifu, Gifu Prefecture, Japan. After the castle was dismantled in the beginning of the Sengoku period, the Kiridōshi Jin'ya was built on the same spot.