The Lavedan (French pronunciation: [lavdɑ̃]; in Gascon eth/lo Lavedan, /et/lu laβedã/), or occasionally vallées des Gaves, denotes a mountainous natural region of France, located at the heart of the Pyrénées, and forms a group of valleys upstream of Lourdes.

The Lavedan is historically part of the Gascony province and of the county of Bigorre.

[9] Il is made up of the Latin -etan, -itan suffix, typically present in names of iberian peoples.

It is separated from Aragon by the France–Spain border, traversable by numerous mountain passes.

The main towns are Argelès-Gazost, Pierrefitte-Nestalas, Cauterets, Luz-Saint-Sauveur, Gèdre and Gavarnie.