R. Thyagarajan (died 1 July 2018) was an Indian writer, producer and director who worked in Tamil cinema.
After his marriage in 1966, he began to work on the productions of his father-in-law, Sandow M. M. A. Chinnappa Thevar of Devar Films.
[1] In the late 1960s, he worked as an assistant director and as an associate editor in the films, Haathi Mere Saathi (1971) and Nalla Neram (1972).
[2][3] His first directorial venture was Vellikizhamai Viratham (1974), which portrayed the bond between the female protagonist and her deity, the Naga-Devatha.
The film starring Sivakumar, performed well at the box office and was later remade in Hindi and Telugu.