Theru Vilakku () is 1980 Indian Tamil-language film directed by M. A. Kaja. The film stars Vijayan and Deepa. It was released on 7 March 1980.
The music was composed by Gangai Amaran.
Kanthan of Kalki, playing on the film's title which means a street lamp, said the lamp was not giving any light, but applauded Swarna's performance.