Cairon (French pronunciation: [kɛʁɔ̃] ⓘ) is a commune in the Calvados department in the Normandy region in northwestern France.

The commune of Cairon is situated in Normandy, in Calvados, 5 kilometers to the north-west of Caen.

Cairon, Karon in 1077 and Cayron in 1231:[3] the toponym was probably formed from the Gallo-Roman Carius by adding the suffix -onis.

[4] During the Invasion of Normandy, Cairon was liberated on 11 June 1944 by the 46th Royal Marine Commando.

In 2015, the commune totaled 1,947 inhabitants, a growth of 21% compared to 2010 (Calvados: +1.53%, France outside Mayotte: +2.44%).