Taiikukan Baby (体育館ベイビー, Taiikukan Beibī), also known as Gymnasium Baby, is a 2008 Japanese film directed by Yoshihiro Fukagawa and based on the novel of the same name by Keiko Kanome. The film stars Yūichi Nakamura as Jun Shibahara, Yūta Takahashi as Naoki Murai and Shō Kubo as Shōichi Kato. The film was released on May 10, 2008. The movie also has a sister film premiered simultaneously titled Classmates, which is composed of the same cast but with different plot and without BL themes.