Hourtin (French pronunciation: [uʁtɛ̃]; Occitan: Hortin, pronounced [uɾˈti(n)]) is a commune of southwestern France, located in the Gironde department, administrative region of Nouvelle-Aquitaine (before 2015: Aquitaine).

It is located in the canton Le Sud-Médoc, part of the district of Lesparre-Médoc.

The town is divided into three main neighbourhoods (Hourtin-Ville, Hourtin-Port, Hourtin-Plage) located several kilometres from one another.

Hourtin-Ville is centred around a large square with a grassy area, church and some basic facilities.

Hourtin-Port is on the Lac d'Hourtin et de Carcans, one of the great lakes of the Landes.