Comunità montana Walser Alta Valle del Lys
Italian mountain community
Headquarters of the community at Issime
Coordinates (Headquarters): 45°41′N 7°51′E / 45.683°N 7.850°E / 45.683; 7.850
Country	Italy
Region	Valle d'Aosta
Headquarters	Issime
Area
• Total	203.02 km2 (78.39 sq mi)
Population  (2013)[1]
• Total	2,025
• Density	10.0/km2 (26/sq mi)
Time zone	UTC+1 (CET)
• Summer (DST)	UTC+2 (CEST)
Website	www.cm-walser.vda.it

The Comunità montana Walser Alta Valle del Lys ("Walser Upper Lys Valley mountain community", in French Communauté de montagne Walser Haute Vallée du Lys, in German Walser Berggemeinschaft Oberlystal) is an association of 4 comuni in the Italian region of Valle d'Aosta.

The name of the Comunità comes from the Walser people that live in the upper Lys or Gressoney valley, in the comuni Gressoney-Saint-Jean, Gressoney-La-Trinité and Issime. The Walser people came from the Swiss canton of Valais; they speak a German dialect.

Its main purpose is to promote the development of the valleys in the preservation of their cultural and environmental heritage. The Comunità also helps with technical assistance to all the comuni of the region.

The main activities have been:

• protection of alpine pastures (or Alpine tundra);
• development of tourism;
• preservation of the Walser culture.

This Comunità is in the eastern part of Valle d'Aosta, to the east of Aosta, the capital city of the region. The comuni are in a small valley, the Lys or Gressoney valley. This small valley is lateral to the main valley of Aosta and through it flows the Lys river.

The Comunità montana Walser Alta Valle del Lys has a total area of about 203.02 km² (78.39 sq mi) and a population of 2,025;^[1] its population density is of 10 inhabitants/km².

The headquarters of the mountain community are in Issime.

The Comunità includes the following comuni:

• Valle d'Aosta

• The National Union of Mountain Towns and Communities - UNCEM Archived 2014-04-19 at the Wayback Machine
• Comuniverso: le 211 Comunità montane Archived 2016-03-13 at the Wayback Machine (in Italian)
• Guida Rurale della Valle d'Aosta. Comunità Montana Mont Rose - Walser, Alta Valle del Lys (in Italian)