Thirteen Years' War

Thirteen Years' War may refer to:
 * the Thirteen Years' War (1454–1466) between the Prussian Confederation and Poland versus the Teutonic Order state
 * the Long Turkish War (1593–1606) between the Habsburg Monarchy and the Ottoman Empire
 * the Russo-Polish War (1654–1667) between Russia, the Cossacks and the Polish–Lithuanian Commonwealth