Ramanaa is a 2002 Indian Tamil-language vigilante action film written and directed by A. R. Murugadoss, stars Vijayakanth, Simran (in a cameo appearance) and Ashima Bhalla in lead roles.

[2][3] The film is about a man named Ramana who decides to abolish corruption completely with the help of his ex-students who are working in various government offices.

The police find a tape recording and a file on the dead officer's body that provide significant evidence concerning the kidnapping and subsequent murder.

The files suggest that the crimes were committed by members of the self-proclaimed "Anti-Corruption Force" (ACF), a citizen militia seeking to eliminate corruption through vigilante acts.

The film's setting then shifts to Dr M. Ramanaa, a mild-mannered professor at National College in Chennai, who lives in a house with four adopted kids.

While treating his adopted child at a big private hospital, Ramanaa discovers that the officials at the facility are engaging in extortion and fraud.

Ramanaa takes the money he paid the hospital and gives the remaining huge sum to the poor man's family.

His grief-stricken father, a big and powerful construction magnate named Bhadrinarayanan, returns from Mumbai and vows to take revenge on the man responsible for his son's death.

Seven years ago, Ramana was a college professor with a small cute family, of him, his nine-month pregnant wife Chithra, and his daughter.

During the festival of Deepavali, Ramanaa's apartment building collapses due to heavy construction work nearby, killing many residents including Chitra and his daughter.

Frustrated, Ramanaa seals the room and attacks all officers, and as he is about to kill Bhadrinarayanan, he is beaten badly by his men, and is thrown on a highway.

Meanwhile, a local police constable, frustrated for being not promoted, as he could not bribe officials, begins secretly building the case against the ACF.

Malathi Rangarajan of The Hindu opined that "The concept is Utopian and the sequences almost implausible, but A. R. Murugadas sends a ray of hope for society's honest lot, through his 'Ramana'".

[9] A critic from Sify wrote that "Vijaykanth's Ramanaa is an engrossing crime drama which overflows with sharp dialogues against the corrupt system and is shot stylishly by director A.R.

[11] Cinesouth wrote "When the younger actors are busy taking a walk in the gardens of romance, the older heroes don't seem to tire of doing roles of the 'Gentleman', 'Indian' and 'Citizen' kind.

Two things set this film apart from the rest- director Murugasdas' excellent screenplay and the very unusual climax.