Madeleine Eve Barnett (née Bollinger; born 28 October 1946) is a former Australian diver. She won a bronze medal in the 10 metres highboard event at the 1974 British Commonwealth Games. She also competed at the 1976 Summer Olympics in the 3 metre springboard event where she finished 15th and in the 10 metre platform event where she finished 18th. She is the mother of Olympic bronze medallist diver Steven Barnett.