Vaidehi Kathirunthal is a 1984 Indian Tamil-language romantic drama film written and directed by R. Sundarrajan. The film stars Vijayakanth and Revathi in the lead roles. It focuses on two villagers, Vaidehi and Vellaisamy, whose lives undergo a drastic turn when they meet. They discover that they must join forces to save a young couple from the wrath of the other villagers.
Vellaisamy is an unkempt derelict who lives by the village temple doing menial jobs to survive but has an impressive singing ability. Vaidehi is a young widow who lives in the village with her sorrowing, alcoholic father. One day when some villagers spot Vellaisamy scribbling Vaidehi's name on the temple walls, rumours start circling. When a distressed Vaidehi approaches and questions Vellaisamy, he reveals his tragic past and how he lost the woman of his affection, also named Vaidehi. Vellaisamy and Vaidehi now share a mutual respect for each other's melancholic lives but soon realise they need to work together to unite a young couple in love against the wrath of the whole village.