The Battle of Castiglione saw the French Army of Italy under General Napoleon Bonaparte attack an army of Habsburg Monarchy led by Feldmarschall Dagobert Sigmund von Wurmser on 5 August 1796. The outnumbered Austrians were defeated and driven back along a line of hills to the river crossing at Borghetto, where they retired beyond the Mincio River. The town of Castiglione delle Stiviere is located 10 kilometres (6 mi) south of Lake Garda in northern Italy. This battle was one of four famous victories won by Bonaparte during the War of the First Coalition, part of the French Revolutionary Wars. The others were Bassano, Arcole, and Rivoli.

Castiglione was the first attempt by the Austrian army to break the French Siege of Mantua, which was the primary Austrian fortress in northern Italy. To achieve this goal, Wurmser planned to lead four converging columns against the French. It succeeded insofar as Bonaparte lifted the siege in order to have the manpower sufficient to meet the threat. But his skill and the speed of his troops' march allowed the French army commander to keep the Austrian columns separated and defeat each in detail over a period of about one week. Although the final flank attack was prematurely delivered, it nevertheless resulted in a victory.