Thengai Srinivasan (21 October 1937 – 9 November 1988) was an Indian actor and popular comedian, who appeared in Tamil-language films in the 1970s and early 1980s. He was given the title Thengai (coconut) after his role as a coconut-seller in the drama Kal Manam, staged by actor K. Kannan. Although originally a comedian, he also performed in other genres and enacted several lead and antagonistic roles.

1985