Vathiyar ( ) is a 2006 Indian Tamil-language action film directed by A. Venkatesh from a story written by Arjun. The film stars Arjun and Mallika Kapoor, while Vadivelu, Pradeep Rawat, Prakash Raj, Manivannan and Amit Tiwari play supporting roles. The soundtrack and background score were composed by D. Imman. Vaathiyaar was released on Deepavali 20 October 2006.

Plot

The film opens with former Chief Minister Naachiyar being sentenced to prison for his involvement in the Housing Board construction scam. Refusing to pay the penalty, Naachiyar vows to exact vengeance on the incumbent Chief Minister for putting him behind bars. Meanwhile, notorious gangster Veera terrorizes the public, prompting them to seek help from Annadurai "Dorai". Dorai confronts Veera and his men, ultimately killing Veera. ACP Eshwara Pandian investigates the scene and identifies Dorai as the perpetrator. However, he is frustrated by the lack of evidence to arrest Dorai. Eshwara Pandian warns Dorai that he will apprehend him once he gathers sufficient proof, criticizing Dorai's use of violence to achieve justice. Dorai runs an orphanage called Annai Illam. His violent methods have estranged him from his mother and younger sister, Susheela. His mother works in a garment factory to make ends meet. During a medical camp at the orphanage, Dorai discovers that contaminated water is harming the children. He confronts Rajaram, the owner of the Zeo Leather factory, for polluting the water source. Seizing the opportunity, Dorai rallies the factory employees to strike against Rajaram, using their protest to demand the installation of a water processing unit in the factory, enraging Rajaram.