Karunai Ullam (Merciful Heart) is a 1978 Tamil-language film directed by A. Bhimsingh and written by Jayakanthan. The story revolves around Gauri, a middle-aged woman who encounters her old lover at his house, where he seeks her hand due to the dying wish of his wife.
The film features Srikanth, K. R. Vijaya, Vijayakumar, Jaya Guhanathan, and Suman in its cast. It is based on Jayakanthan's novel Karunaiyinal Alla (Not out of mercy). The film was released on 29 September 1978.
Produced by M. S. V. Movies, it was the last film directed by A. Bhimsingh to release. The soundtrack details are not available in the provided sources.
