Hero is a 2019 Indian Tamil-language superhero film directed by P. S. Mithran, and produced by Kotapadi J. Rajesh under his production house KJR Studios. It stars Sivakarthikeyan, Arjun, Abhay Deol, Kalyani Priyadarshan and Ivana in prominent roles. This film marks the Tamil debuts of Deol and Kalyani Priyadarshan. The story was written by P. S. Mithran, Pon Parthiban, Savari Muthu and Antony Bhagyaraj. The music for the film is composed by Yuvan Shankar Raja, with cinematography done by George C. Williams, and editing done by Ruben.
The film was released worldwide on 20 December 2019. A Telugu dubbed version titled Shakthi was released on 20 March 2020. Prior to its release, filmmaker Bosco Prabhu accused Mithran for plagiarizing his story. In April 2020, the Madras High Court issued an interim order banning the film from television and streaming platforms, due to which it was taken down from Prime Video. The ban was lifted in May 2020 once the issue was resolved.