Owl's Castle (梟の城 Fukurō no Shiro ) is a 1999 Japanese ninja-themed film written by Masahiro Shinoda and Katsuo Naruse and directed by Masahiro Shinoda. It is a remake of the 1963 film Castle of Owls, based on Ryotaro Shiba's 1959 novel of the same name.
The film starred Kiichi Nakai, Takaya Kamikawa, Mayu Tsuruta and Riona Hazuki in the main roles. The music for the film was composed by Joji Yuasa.