The Old Cottonians’ Association - Dr. Raja Ramanna Inter-School Chess Tournament is an inter-school state Chess tournament organized by the Old Cottonians' Association in association with Bangalore Urban District Chess Association (BUDCA) and Karnataka State Chess Association (KSCA) and in loving memory of Padma Vibhushan and Old Cottonian Dr. Raja Ramanna, the Father of India's Nuclear Program and Former Patron of the Old Cottonians' Association.