Jean (c. 1400 – 28 July 1466), Lord of Haubourdin, called the Bastard of Luxembourg (French: le Bâtard de Luxembourg) or the Bastard of Saint-Pol (French: Bâtard de Saint-Pol), also named Hennequin, was a nobleman and knight from northern France, a vassal of the duke of Burgundy. He was the illegitimate son of Waleran of Luxembourg, Count of Saint-Pol (whose surname and title gave name to Jean's appellations), by a liaison with Agnès de Brie. Jean fought in the Anglo-Burgundian side during the Hundred Years' War; his first cousins, the counts of Saint-Pol and Ligny, as well as the bishop of Thérouanne, featured prominently in the English administration and military operations in France.