Kan Simittum Neram (transl. Eye blinking time) is a 1988 Indian Tamil-language thriller film directed by Kalaivanan Kannadasan in his debut. The film stars Karthik, R. Sarathkumar and Ambika, and was released on 13 April 1988. The film marks Sarathkumar's debut in Tamil cinema. It was remade in Hindi as Sailaab (1990).