Chithi is a Tamil Television television series produced by Radaan Productions and originally aired on Sun TV from 20 December 1999 to 10 November 2001. It holds the credit of most watched regional Language television program in India ever. Produced by Tamil actress Raadhika Sarathkumar, it starred her as the protagonist in a dual role. Veteran actor Sivakumar played the role of Raadhika's husband.