Sun TV is an Indian Tamil-language general entertainment pay television channel owned by Sun TV Network. It was launched on 14 April 1993. It is the flagship channel of the Chennai-based media conglomerate Sun Group's Sun TV Network. It was founded and is owned by Kalanithi Maran.

It was started airing on open network (Antenna) on 14 July 2002 at the time of "Majunu" Tamil movie premiering. Then it was removed from this open network on 2005. It was also removed from free on 9 November 2007. Sun TV launched its HD version on 11 December 2011.

Since its inception, the channel consistently remains the top rated Tamil channel and one of the top rated Indian television channel.