Madras Kandaswami Radhakrishnan, professionally known as M. K. Radha, was an Indian actor who worked mainly in Tamil cinema. He was born in Chennai and took up acting in Tamil stage at the age of 7. He was tutored by his father Kandasamy Mudaliar a famous drama teacher at that time. His career spanned for almost 25 years in Tamil drama as a lead actor during India´s pre-independence days and he was a popular social hero in various patriotic dramas.

Sathi Leelavathi is a 1936 Indian Tamil-language drama film directed by Ellis R. Dungan and written by Madras Kandaswamy Mudaliar. It is based on S. S. Vasan's novel of the same name, which had been serialised in 1934. M. K. Radha stars as Krishnamurthy, a man from Madras, who is lured into drinking alcohol by an acquaintance. Believing he murdered his friend in a drunken stupor, Krishnamurthy flees to Ceylon while his wife and daughter, played by M. R. Gnanambal and M. K. Mani respectively, are reduced to poverty. T. S. Balaiah, M. G. Ramachandran, M. V. Mani and P. Nammalvar appear in supporting roles.