Kaththi (transl. Knife) is a 2014 Indian Tamil-language action drama film written and directed by AR Murugadoss and produced by Lyca Productions. The film stars Vijay in a dual role with Samantha, Neil Nitin Mukesh, Tota Roy Chowdhury, and Sathish. It focuses on Kathiresan, a petty thief and lookalike of Jeevanantham, who assumes the identity and attempts to lead a rebellion by farmers from the latter's village, Thanoothu, and helps them fight against an entrepreneur who exploited Thanoothu's water resources.