Entremont-le-Vieux (French pronunciation: [ɑ̃tʁəmɔ̃ lə vjø]; Arpitan: Entremont-le-Viûx) is a commune in the Savoie department in the Auvergne-Rhône-Alpes region in Southeastern France.

Entremont-le-Vieux is a landlocked village close to many water streams and winter sports resorts (including Le Désert d'Entremont).

Neighboring communes of Entremont-le-Vieux are Saint-Pierre d'Entremont in Savoie, Sainte-Marie-du-Mont, Saint-Jean-de-Couz and Corbel.

The church of Entremont-le-Vieux, Notre-Dame d'Epernay, was rebuilt in the mid-19th century to its present location, largely to accommodate the 1,800 people of this time.

In 1934, a creamerie was built at Entremont-le-Vieux the renowned Fruitière des Entremonts (for milk, cheese and local products).