Thupparivaalan (transl. Detective) is a 2017 Indian Tamil-language action thriller film written and directed by Mysskin. The film was produced by Vishal, who also stars in the lead role with Prasanna. The film also features Vinay Rai, Anu Emmanuel in her Tamil debut,Andrea Jeremiah and K. Bhagyaraj. The film and its titular protagonist were both loosely inspired by British writer Arthur Conan Doyle's detective character, Sherlock Holmes; he has been given the credits in the opening of the film.

The film was launched in March 2016, and was released on 14 September 2017.