M. R. Krishnamurthy (1940–2012) who popularly referred to as MRK, was an actor and stage artist who appeared in Tamil films. He starred in more than 100 films and in more than 500 stage plays conceived and hosted by various leading stage artistes. M. R. Krishnamurthy (1940–2012) who popularly referred to as MRK, was an actor and stage artist who appeared in Tamil films. He starred in more than 100 films and in more than 500 stage plays conceived and hosted by various leading stage artistes.