The Order of the Dragon (Latin: Societas Draconistarum, literally "Society of the Dragonists") was a monarchical chivalric order only for selected higher aristocracy and monarchs, founded in 1408 by Sigismund of Luxembourg, who was then King of Hungary and Croatia (r. 1387–1437) and later also Holy Roman Emperor (r. 1433–1437). It was fashioned after the military orders of the Crusades, requiring its initiates to defend the cross and fight the enemies of Christianity, particularly the Ottoman Empire.
The Order flourished during the first half of the 15th century, primarily in Germany and Italy. After Sigismund's death in 1437, its importance declined in Western Europe.