Kalaignanam (born K. M. Balakrishnan), is an Indian writer, actor, producer and director who works in Tamil films.
Kalaignanam was born in Elumalai Village.
Rajinikanth essayed first independent lead role in the movie Bairavi produced by Kalaignanam. Bairavai movie was produced under the production company name Valli Velan movies. After the success of the movie later Kalaignanam produced his movies under the production company name Bhairavi productions.
He has written his cinema experiences as four volume of books named Cinema secret.
Kalaignanam's elder son Murugan died in September 2017.