Nadigan (transl. Actor) is a 1990 Indian Tamil-language comedy thriller film written directed by P. Vasu. A remake of the Hindi film Professor (1962), it stars Sathyaraj and Khushbu. The film was released on 30 November 1990 and became a critical and commercial success, winning four Tamil Nadu State Film Awards.

Vasudevan Peethambaram, known professionally as P Vasu, is an Indian director, writer and actor who works predominantly in Tamil and Kannada films apart from a few Telugu, Hindi, and Malayalam language films. In a career spanning three decades, Vasu has directed over 64 films to his credit.