Karunas (born as Karunanidhi Sethu; February 21, 1970) is an Indian actor, comedian, composer, playback singer and politician in the Tamil film industry.

Apart from acting, Karunas has also been credited in films as a producer, music composer and a singer, while he continues to serve as the Vice-President of the Nadigar Sangam, after being elected in October 2015.

[5] Director Bala heard one of his songs and subsequently signed Karunas on for an acting role in his second directorial venture, the drama film Nandha (2001).

[10] He subsequently made a return to starring supporting roles thereafter, being successful for his performance of a suicidal man in Darling (2015) and as a villager in Komban (2015), which became his hundredth film.

[17][18] The couple have a daughter and a son named Ken Karunas who is a child artist in the movie industry, who was born in 2001, making his debut in Ragalaipuram.

Karunas's younger brother, Nagas, was set to making his acting debut through C. Ranganathan's Vantharu Jaicharu, but the film eventually did not release.