Tyagraj Paramasiva Iyer Kailasam (29 July 1884 – 1946), was an Indian playwright and prominent writer in the Kannada literature.

His contribution to Kannada theatrical comedy earned him the title Prahasana Prapitamaha (the great-grandfather of humorous plays).

He was supported by Maharaja Krishnaraja Wadiyar IV to study geology at the Royal College of Science, London.

His father's failed ambitious plan that he would become the Director General of the Department of Geology led him to stop talking to him.

He opposed the company theatre's obsession with mythology and stories of royalty and shied away from loading his plays with music.