Oru Thalai Ragam (transl. One Side Love) is a 1980 Indian Tamil-language romantic musical film written by Rajendar and produced by E. M. Ibrahim who is credited for direction. The film stars Shankar and Roopa, with Raveendar, Chandrasekhar, Kailashnath, Kumari Usha and Thyagu in supporting roles. It revolves around a college student falling in love with his classmate who, despite liking him, avoids returning his love.

Oru Thalai Ragam was released on 2 May 1980. The film earned critical acclaim and became a major box office success, running for over a year in theatres. It also won the Cinema Express Award for Best Tamil Film. The film was remade in Telugu as Panchadara Chilaka (1999).