John III of Auvergne (1467 – 28 March 1501), Count of Auvergne, was the son of Bertrand VI of Auvergne and Louise de la Trémoille (1432 – 10 April 1474), Dame de Boussac, the daughter of Georges de la Trémoille. He was the last in the line of Counts of Auvergne and Boulogne from the La Tour d'Auvergne family.