Kanni Theevu () is a 1981 Indian Tamil-language action thriller film, directed by T. R. Ramanna and produced by Sri Ayvar Arts films. The film stars Jaishankar, Radhika, C. L. Anandan, and Seema. It was released on 10 April 1981.
The songs were written by Panchu Arunachalam and music composed by Ilaiyaraaja.
Nalini Sastry of Kalki called the film an unhealthy child with a mixture of Vitthalacharya style and Hollywood science fiction.