Thanjavur Radhakrishnan Ramachandran (T.R.Ramanna) (1923–1997) was an Indian film director and producer.

Ramanna started his life as a sound recordist in a city studio and then made his way to film direction.

He produced movies in Tamil, Telugu and Hindi, many of which were successful.

One of his successful film was Manapandhal, inspired by the Hollywood classic Sabrina (1954), directed by Billy Wilder and starring Humphrey Bogart, William Holden and Audrey Hepburn.

This article about an Indian film director is a stub.