The Battle of Valmy, also known as the Cannonade of Valmy, was a tactically indecisive artillery engagement, but strategically it ensured the survival of the French Revolution. As such, and despite its minor size, it appears as one of the most decisive battles in history, as well as one of the first times a mix of old soldiers and raw volunteers were able to successfully oppose the highly respected professional Prussian and Austrian armies.

It was fought near the village of Valmy in northern France on 20 September, 1792, during the War of the First Coalition (part of the French Revolutionary Wars). Forces of the French Army of the North, commanded by Charles François Dumouriez, and the French Army of the Centre, commanded by François Christophe Kellermann, stopped the advance towards Paris of a Prussian army, commanded by the Duke of Brunswick.

Despite the minimal casualties (less than 500 total) and the inconclusive tactical results, Valmy has been considered one of the most significant battles of the French Revolutionary Wars, as it allowed the survival of France"s new armies (facing a highly professional Prussian army) and launched a period of renewed military strength that was to last nearly a quarter of a century.