Rudhran is a 2023 Indian Tamil-language action thriller film produced and directed by S. Kathiresan from a script by K. P. Thirumaaran. The film, which marks S. Kathiresan's directorial debut, stars Raghava Lawrence and R. Sarathkumar, alongside Priya Bhavani Shankar, Nassar, Poornima Bhagyaraj, Kaali Venkat, Ilavarasu, Redin Kingsley and Sharath Lohitashwa. The score was composed by Sam C. S., while the soundtrack was composed by G. V. Prakash Kumar, Dharan Kumar and OfRo.

Rudhran was released theatrically on 14 April 2023, coinciding with Puthandu, to mixed-to-negative reviews from critics, with criticism directed towards the screenplay, writing, and fight sequences, but the social message, music and Lawrence's performance were praised. The film became a box office bomb.

Rudhran, an IT professional, lives a happily life with his parents Devaraj and Indhira in Chennai. Rudhran falls in love with Ananya, a lab technician, who later reciprocates his feelings. Devaraj, a transport agency owner, helps his friend Das get a loan of ₹6 crore from a moneylender Ethiraj, but Das cheats Devaraj by absconding with the loan and Devaraj dies upon learning this. After Rudhran and Ananya get married, Rudhran leaves for London to settle the financial issues, Ananya becomes pregnant and gives birth to a daughter Anya. Ananya and Anya spend time with Rudhran in London. Rudhran tells her to see his mother and Ananya goes back to Chennai.

One day, Rudhran hears about Indhira's sudden death and Ananya's disappearance, where he travels to Chennai and carries out Indhira's funeral rites. Rudhran and Shakthi investigates about Ananya's disappearance, where they meet a cab driver, who had picked Ananya from the airport. However, the cab driver gets killed by a motorcycle gang. Rudhran captures one of the gang member and arrives at his hideout, where he sees Varadha, whom he met at Indira's funeral. Varadha is the leader of the motorcycle gang. Rudhran tortures Varadha to reveal the truth.

Past: In 2007, Varadha and Bhoomi were recidivists in Pollachi who develops their crime network by targeting the parents of the abroad-settled children. Bhoomi and Varadha kills the parents by injecting them with a serum, which would induce heart attack, and later uses the parent's fingerprints to usrup their land and properties. Due to a ₹100-crore business deal, Bhoomi targets Indhira and her house. Varadha and his gang enters Indira's house, where they secretly kill her.

Present: Rudhran gets furious after learning this and impales Varadha. However, Bhoomi arrives with his men and attacks Shakthi and Rudhran, where Guna, Bhoomi's henchmen, hangs Shakthi to death. Bhoomi reveals that he told Varadha and his gang to kill Ananya after she arrived at Indhira's house. Bhoomi stabs Rudhran, where he burns the factory and leaves Rudhran to his death, but a constable Narasimhan saves Rudhran. Distraught over his family's death, Rudhran begins his violent crusade, where he kills Sasi at a container depot.

Rudhran later kills Guna at an under-construction building. Bhoomi realizes that Rudhran is after him, where Bhoomi tells Ganga to hire Maari to kill Rudhran. Maari attacks Rudhran and Anya at a festival in Tirukalukundram, but Rudhran kills Maari and his men. Rudhran and Bhoomi confront each other at the Kala Bairavaa temple. Rudhran kills Bhoomi's men, including Ganga, and an intense fight ensues between Bhoomi and Rudhran. Rudhran finally kills Bhoomi by injecting the same serum, which Bhoomi used to kill the parents, thus avenging his family's death.

A few years later, Rudhran runs a charitable trust under Indhira's name, where he tracks down Das in Madurai and thrashes him to avenge Devaraj's death indicating a sequel.