Aatha Un Koyilile is a 1991 Indian Tamil-language drama film written and directed by Kasthuri Raja.
The film stars newcomers Selva and Kasthuri, with newcomer Ravi Rahul, Vinodhini, Janagaraj, Vinu Chakravarthy, K. Prabhakaran, Vadivelu, and Senthil playing supporting roles.
Released on 10 May 1991, the film was remade in Telugu as Prema Vijetha (1992).
The movie tells the story of Pandi, a shy young man who falls in love with Easwari, a village girl from a poor family. The film also explores the past life of Kasthuri, where she and her family face problems when her cousin Durairasu enters their house to marry her.