Karthika Nair (born 27 June 1992) is a former Indian actress who primarily worked down South in all language films. She made her debut in the 2009 Telugu film Josh, opposite Naga Chaitanya. She rose to fame starring in her second and her first successful Tamil film Ko, opposite Jiiva and Piaa Bajpai. She found further success in the Malayalam film Proprietors: Kammath & Kammath, opposite Dileep. She is well known for her action roles in the comedy Brother of Bommali, the social drama Purampokku Engira Podhuvudamai and the Hindi epic TV series Aarambh.

Early life
Karthika was born to former Indian actress Radha. She has a brother and a sister, Thulasi Nair, who is also a South Indian actress. She did her schooling in Podar International School in Mumbai earned a degree in business from a London School of Economics-affiliated college.