Isaac Ganunga (born December 10, 1959) is a retired Malawian middle-distance runner.
He competed in the 1500 metres at the 1984 Olympic Games[1] as well as the 800 and 1500 metres at the 1986 Commonwealth Games without reaching the final. At the 1987 All-Africa Games he competed in the 4 x 400 metres relay and helped setting a Malawian record that still stands.