Gastes (French pronunciation: [ɡast]; Occitan: Gastas) is a commune in the Landes department in Nouvelle-Aquitaine in southwestern France.

[3] It is located in the Landes forest, between Mimizan and Biscarrosse.

The name of the commune, Gastes, comes from Latin vastas, which means an "empty/deserted land".

It synonymous with French gâtine.

This Landes geographical article is a stub.