The Battle of Kars (August 19, 1745) was the last major engagement of the Ottoman-Persian War. The battle resulted in the complete and utter destruction of the Ottoman army. It was also the last of the great military triumphs of Nader Shah. The battle was in fact fought over a period of ten days in which the first day saw the Ottomans routed from the field, followed by a series of subsequent blockades and pursuits until the final destruction of the Ottoman army. The severity of the defeat, in conjunction with the debacle near Mosul, ended any hopes Istanbul had entertained for a military victory in the war and forced them to enter negotiations with a significantly weaker position than they would otherwise have occupied.

The Ottoman–Persian War of 1743–1746 was fought between the Ottoman Empire and the Afsharid dynasty of Iran.