Velum Mayilum Thunai is a 1979 Indian Tamil-language devotional film directed by Ra. Sankaran.
The film features M. R. Radha in dual roles, alongside Baby Sudha, and was produced and written by Ra. Sankaran himself. The screenplay was penned by Rajasekhar, with dialogues also attributed to him.
The movie's music was composed by the renowned duo Shankar–Ganesh, while the lyrics were written by Kannadasan and Vaali.
The film centers on Velayudham, an atheist who clashes with his son Saravanan over the concept of divine power.
