RS Shivaji was the son of actor-producer MR Santhanam. He made his film debut in the 1980s and has several hit films under his credit over the last four decades. He was known for his association with Kamal Haasan as he starred in several films. His best works include Vikram, Satya, Apoorva Sagodaragal, Michael Madana Kamaraju, Guna, Chachi 420, and Anbeshivam. All of these films were also translated into Telugu.
Later, he made his Telugu debut with Chiranjeevi's Jagadekaveeru Athiloka Sundari. In the film, RS Shivaji played the role of a constable. Besides this, he was also seen in 1000 Abaddalu, directed by Teja. His last two releases were Sai Pallavi's Gargi and Vattakara
Shivaji also starred in TV shows--Kula Vilakku, Ethanai Konam Ethanai Paarvai, Anbulla Snehidhiye, Maruthani and Vallamai Tharayo. He was a part of the web series Time Enna Baas in a lead role.