Arasatchi is a 2004 Indian Tamil-language vigilante action film directed by N. Maharajan.
The film stars Arjun and Lara Dutta, alongside an ensemble cast, marking Dutta's Tamil debut.
The story follows Siddharth, the General Manager of a five-star hotel owned by Rajesh, who falls in love with Rajesh's daughter, Lara.
Siddharth navigates his personal life while becoming embroiled in public causes and corruption, leading to a confrontation with a lawyer, Janakiraman, who defends a killer.
After witnessing the killing of a friend, Prakash, Siddharth seeks revenge against Janakiraman and later kills him.
The film was released on 17 September 2004.