OK Jaanu (English: OK Darling) is a 2017 Indian romantic drama film directed by Shaad Ali, story and screenplay by Mani Ratnam. Produced by Mani Ratnam and Karan Johar under their banners Madras Talkies and Dharma Productions respectively. It is an official remake of Mani Ratnam's Tamil film O Kadhal Kanmani starring Dulquer Salmaan and Nithya Menen.