O Kadhal Kanmani also known as OK Kanmani, is an upcoming Tamil romantic drama film directed by Mani Ratnam and produced by his home studio Madras Talkies. The film stars Dulquer Salmaan and Nithya Menon in lead roles and tells the story of a young couple cohabiting in India. The soundtrack album and film score are composed by A. R. Rahman. The film is scheduled for release on April 17, 2015.