Ranatunga is a Sri Lankan surname, which may refer to:
Arjuna Ranatunga, (born 1963), cricketer - batsman and captain General Cyril Ranatunga, Army officer Dammika Ranatunga, (born 1962), cricketer - batsman Nishantha Ranatunga, (born 1966), cricketer - all-rounder Prasanna Ranatunga, politician Reggie Ranatunga, Politician Ruwan Ranatunga, Politician Sanjeeva Ranatunga, (born 1969), cricketer - batsman