Gontaut may refer to:
Armand de Gontaut, baron de Biron (1524–1592), celebrated French soldier of the 16th century Armand Louis de Gontaut, Duc de Lauzun, later duc de Biron Charles de Gontaut, duc de Biron (1562–1602), son of Armand de Gontaut, baron de Biron Charles-Armand de Gontaut, duc de Biron (1663–1756), French military leader who served under Louis XIV and Louis XV Germà de Gontaut (1355–1386), Occitan poet and merchant Louis Antoine de Gontaut, (1700–1788), Duke of Biron and a French military leader who served under Louis XV Marie Josephine Louise, Duchesse de Gontaut (1773–1857), daughter of Augustin François, comte de Montaut-Navailles Prix Gontaut-Biron, Group 3 flat horse race in France open to thoroughbreds which are four-years-old or above