Nyaya Tharasu is a 1989 Indian Tamil film, directed by K. Rajeshwar making his directorial debut, starring Nizhalgal Ravi and Radha in lead roles. The film, produced by M. Veda had musical score by Sankar Ganesh and was released on 1989. The film was a remake of Malayalam film Panchagni.
The film marked the directorial debut of K. Rajeshwar who earlier scripted for films like Panneer Pushpangal (1981), Kadalora Kavithaigal (1986) and Solla Thudikuthu Manasu (1988). The film was a remake of the Malayalam film Panchagni, and had a screenplay written by M. Karunanidhi.