Kaatrin Mozhi is a 2018 Indian Tamil-language comedy drama film written and directed by Radha Mohan, starring Jyothika, Vidharth and Lakshmi Manchu. A remake of the Hindi-language film Tumhari Sulu (2017), it narrates the story of an ambitious housewife who becomes a radio jockey for a late-night relationship advice show. The film was released in theatres on 16 November 2018. It's title was taken from a song from Mozhi (2007), also directed by Radha Mohan and starring Jyothika.