The Order of the Golden Spur, officially known also as the Order of the Golden Militia, is a papal order of knighthood conferred upon those who have rendered distinguished service in propagating the Catholic faith, or who have contributed to the glory of the Church, either by feat of arms, by writings, or by other illustrious acts. With the death in 2019 of the last remaining knight, Grand Duke Jean of Luxembourg, the order is considered dormant.

Jean was the Grand Duke of Luxembourg from 1964 until his abdication in 2000. He was the first Grand Duke of Luxembourg of French agnatic descent.