Friends: Mononoke Shima no Naki (friends もののけ島のナキ Lit: Friends: Naki on Monster Island ) is a 2011 Japanese computer-animated film that is based on the Japanese children's novel Naita Aka Oni by Hirosuke Hamada. It is directed by Takashi Yamazaki and Ryuichi Yagi. The film's script was also written by Yamazaki. SMAP member Shingo Katori and actor Koichi Yamadera will voice characters in the film.

It was released in Japanese cinemas on 17 December 2011