Alaigal Oivathillai (transl. Waves never cease) is a 1981 Indian Tamil-language romance film written and directed by Bharathiraja, from a story by Manivannan. The film stars two new debutants Karthik and Radha, while Thiagarajan, Silk Smitha and Kamala Kamesh appear in supporting roles. It follows Vichu (played by Karthik), a Hindu Brahmin boy, who falls in love with Mary (played by Radha), a Christian girl. How the lovers unite braving all the obstacles, forms the crux of the story.