Sonthakkaran is a 1989 Indian Tamil-language action film directed by L. Raja and produced by M. Saravanan, M. Balasubramanian & M. S. Guhan.
The film stars Arjun and Nirosha, with notable supporting performances from Sarath Babu, Madhuri, Radha Ravi and S. S. Chandran.
The story follows Policeman Rajadurai "Raja" who arrests Yuvaraj for raping a woman and killing an old man. However, Chalapathi Rao, the father of Yuvaraj, manipulates the situation to frame Rajadurai, leading to his downfall.
Yuvaraj seeks revenge against Rajadurai upon his release from jail. The film features music composed by Chandrabose with lyrics written by Vairamuthu.
Sonthakkaran was released on 16 June 1989.