Albret, an ancient town and castle of Gas-cony, in a district of the same name, now included in the arrondissement of Mont-de-Mar-san, department of Landes. It gave the title of viscount and afterward of duke to an illustrious family, of whom the most distinguished members were Jean d'Albret, who became king of Navarre in 1494 by marriage with the heiress to the crown, and was dispossessed of the Spanish part of his territory by Ferdinand the Catholic in 1512; Henri d'Albret, his son, king of Navarre, who was taken prisoner at Pavia in 1525; and Jeanne d'Albret (see Albret, Jeanne d'). The site of the town is now occupied by the hamlet of Labrit.