K-13 (also spelt K13) is a 2019 Indian Tamil-language psychological mystery film written and directed by Barath Neelakantan in his directorial debut. The film stars Arulnithi and Shraddha Srinath, while Gayathrie, Yogi Babu, and Ramesh Thilak play supporting roles. Sam C. S. has been hired as music composer for the film replacing initially speculated music director turned actor Darbuka Siva due to the latter's acting and directorial commitments and aspirations. The film was released on 3 May 2019 to positive reviews but become an average hit.