Kulamagal Radhai (transl. Radhai, the homely one) is a 1963 Indian Tamil-language romance film directed and written by A. P. Nagarajan and produced by Spider Films. It is based on the novel Vaazhvu Engey (transl. Where is life?) by Akilan. The film stars Sivaji Ganesan, B. Saroja Devi and Devika. It was released on 7 June 1963.