Massu Engira Masilamani (transl. Masilamani alias Massu), also known by its former title Masss, is a 2015 Indian Tamil-language action horror comedy film directed by Venkat Prabhu. The film was produced by K. E. Gnanavel Raja under his Studio Green banner alongside his then-newly formed studio Aadnah Arts, and was distributed by Eros International and Dream factory. The film features an ensemble cast including Suriya, Nayanthara, Pranitha Subhash, Premji, Parthiban and Samuthirakani. Yuvan Shankar Raja composed the film's soundtrack and score, whereas cinematography and editing were handled by R. D. Rajasekhar and Praveen K. L. respectively.