La Croix-Valmer is at the foot of the Massif des Maures hills in the Bay of Cavalaire-sur-Mer, halfway between Le Lavandou and Saint-Tropez.

The Emperor Constantine the Great, on the way to wage war against his brother-in-law Maxentius in 312 AD, is said to have had a vision of a cross in the sky stating "in hoc signo vinces" (by this sign you will conquer) at the location where La Croix-Valmer is now situated.

The area has been inhabited since ancient times, as demonstrated by the discovery of remains such as prehistoric tools, cists, and the Roman farm of Pardigon (dating from the third century BC).

During the Second World War, the beaches of La Croix-Valmer were part of the Allied invasion of Provence during Operation Dragoon.

Abel Faivre (1853-1945), a French painter, lived in La Croix Valmer, near the Gigaro beach.