Overview
Thiagarajan Sivanandam (born 21 June 1946) is an Indian actor, film director and film producer associated primarily with Tamil cinema. Over the course of his career, he has worked across multiple Indian film industries, including Malayalam, Kannada, Telugu and Hindi films, in addition to his core body of work in Tamil.
Thiagarajan comes from a family with strong links to Indian cinema. He is the father of Tamil actor Prashanth, and is married into the family of actor-director Peketi Sivaram, who is his father-in-law. He is also the maternal uncle of Tamil actor Vikram.
As a multi-hyphenate filmmaker, Thiagarajan has contributed to Tamil cinema as a performer in front of the camera as well as in production and direction roles behind it, allowing him to engage with the industry across different facets of filmmaking.
References
Adapted from the English Wikipedia article on Thiagarajan: https://en.wikipedia.org/wiki/Thiagarajan.