Manithanin Marupakkam is a 1986 Indian Tamil-language crime thriller film directed by K. Rangaraj and produced by T. G. Thyagarajan and G. Saravanan of Sathya Jyothi Films.
The film stars Sivakumar, Radha, Jayashree, and Jai Jagadish. It is a remake of the Malayalam film Nirakkoottu.
The story revolves around Ravi Varma (Sivakumar), who is sentenced to death for murdering his wife Kala (Radha). He tells his true story to Sujatha (Jayashree), a news reporter, about what happened.
Sujatha joins as a news reporter in a Tamil daily named Dhinakkural and is assigned to interview Ravi Varma. The Supreme Court had sentenced Ravi to death and the president rejected his appeal.
The film was released on 25 July 1986, with a simultaneous Kannada remake titled Sathya Jyothi produced by the same director and producers in the same year.