Ponnar Shankar, also known as Kalaignarin Ponnar-Shankar, is a 2011 Indian Tamil-language historical action drama film produced and directed by Thiagarajan. It is a fictionalised account of the Ponnar Shankar epic, adapted from M. Karunanidhi's novel of the same name. It stars Thiagarajan's son Prashanth in lead dual roles as the titular warrior princes, with Jayaram featuring in an important role alongside debutantes Pooja Chopra and Divya Parameshwaran, and Prakash Raj as the main antagonist. The film also features an extensive cast of supporting actors with Prabhu, Khushbu Sundar, Sneha, Vijayakumar, Nassar, Rajkiran, Napoleon, and Ponvannan, amongst others.