The Var flows through the Alpes-Maritimesdépartement for most of its length, with a short (~15 km or ~9 mi) stretch in the Alpes-de-Haute-Provence département. It is a unique case in France of a river not flowing in the département named after it (see Var).
The river name is attested in Latin as Vārus and in Ancient Greek as Ouãros (Οὐᾶρος). It stems from the Indo-European root *uōr- (earlier *uer-), meaning 'water, river' (cf. Sanskrit vār, Old Norse vari).[3]