Caen (, French: [kɑ̃] (listen); Norman: Kaem) is a commune in northwestern France. It is the prefecture of the department of Calvados. The city proper has 105,512 inhabitants (as of 2018), while its functional urban area has 470,000, making Caen the second largest urban area in Normandy and the 19th largest in France. It is also the third largest commune in all of Normandy after Le Havre and Rouen.

It is located 15 kilometres (9.3 miles) inland from the English Channel, 200 kilometres (120 miles) north-west of Paris, and connected to the south of England by the Caen (Ouistreham) to Portsmouth ferry route. Caen is located in the centre of its northern region, and it is a centre of political, economic, and cultural power. Located a few miles from the coast, the landing beaches, the bustling resorts of Deauville and Cabourg, as well as Norman Switzerland and Pays d'Auge, Caen is often considered the archetype of Normandy.

Caen is known for its historical buildings built during the reign of William the Conqueror, who was buried there, and for the Battle for Caen, heavy fighting that took place in and around Caen during the Battle of Normandy in 1944, destroying much of the city. The city has now preserved the memory by erecting a memorial and a museum dedicated to peace, the Mémorial de Caen.