The Battle of the Dunes, also known as the Battle of Dunkirk, took place on 14 June 1658, near the strategic port of Dunkirk in what was then the Spanish Netherlands. Part of the Franco-Spanish War and concurrent Anglo-Spanish War, a French army under Turenne, supported by troops from the Commonwealth of England, had besieged Dunkirk. Led by John of Austria the Younger and Louis, Grand Condé, a Spanish force supported by English Royalists and French Fronde rebels attempted to raise the siege but suffered a severe defeat.

Dunkirk is a commune in the department of Nord in northern France. It lies 10 kilometres (6.2 mi) from the Belgian border. It has the third-largest French harbour. The population of the commune in 2019 was 86,279.