Macadamia is a genus of four species of trees in the flowering plant family Proteaceae. They are indigenous to Australia—specifically, northeastern New South Wales and central and southeastern Queensland. Two species of the genus are commercially important for their fruit, the macadamia nut. Global production in 2025 was 344,000 tonnes. Other names include Queensland nut, bush nut, maroochi nut or bauple nut. It was an important source of bushfood for the Aboriginal peoples.