Kadamaiyai Sei is a 2022 Indian Tamil-language psychological action comedy drama film written and directed by Venkat Ragavan in his second directorial film after Muthina Kathirika (2016). The film stars S. J. Suryah and Yashika Aannand, with Charles Vinoth as the main antagonist, and other actors like Rajendran and Vincent Asokan in pivotal roles. The film released theatrically on 12 August 2022.

Justin Selvaraj Pandian, known by his stage name S. J. Suryah, is an Indian film director, screenwriter, actor, composer, producer and music director who predominantly works in Tamil cinema. He sought to become an actor but started out directing, assisting Vasanth and Sabhapathy.