Imafuku Masakazu

was a Japanese samurai of the Sengoku period who served the Takeda clan. He was also known as and held the court title of Chikuzen no kami. Masakazu was the son of , the Takeda retainer who had built Kunōzan Castle and served as its warden. Masakazu's landholding, starting in 1563, was in the Suwa District of Shinano province. He was active under both Takeda Shingen and Shingen's son Katsuyori as a commander of infantry . He also served for a time as the warden of Takashima Castle. Masakazu was killed in 1582 while leading a counterattack against Kiso Yoshimasa, a former Takeda vassal who had turned traitor during the Tokugawa/Oda attacks on Shinano and Kai.