Madras Rajagopala Radhakrishnan Naidu (b. 14 April 1907 - 17 September 1979), popularly known by his stage name, M. R. Radha was an Indian film actor and politician. He was given the title of "Nadigavel" for his acting prowess. After a successful career on stage in his early years, he acted in films from the 1930s to the 1970s, and then, giving up films, he went back to his first love - Stage.