Sonthakkaran (English: Relative) is a 1989 Indian Tamil action film, directed by L. Raja and produced by M. Saravanan, M. Balasubramanian & M. S. Guhan. The film was dubbed into Telugu Kondaveeti Dada. The film stars Arjun, Nirosha in lead roles, while Sarath Babu, Madhuri, Radha Ravi and S. S. Chandran portray pivotal roles. The film had musical score by Chandrabose. The film was released on 16 June 1989. The film was commercially successful upon release.
Rajadurai (Arjun) arrests Yuvaraj (Nassar) for raping a woman and killing an old man. Chalapathi Rao (Radha Ravi) father of Yuvaraj gets Rajadurai trapped in false rape charge and he loses his job. Yuvaraj comes back from the Jail to take revenge against Rajadurai.