John of Armagnac () may refer to:
John I, Count of Armagnac (1311–1373) John II, Count of Armagnac (1333–1384) John III, Count of Armagnac (1359–1391) John IV, Count of Armagnac (1396–1450) John V, Count of Armagnac (1420–1473) Jean d'Armagnac, Duke of Nemours (1470–1503) Jean de Lescun d’Armagnac, died in 1473
See also House of Armagnac