Liddes is a municipality in the district of Entremont in the canton of Valais in Switzerland .

Liddes is first mentioned in 1177 as Leides.

Liddes has an area, as of 2011, of 60.2 square kilometers (23.2 sq mi). Of this area, 33.4% is used for agricultural purposes, while 23.8% is forested. Of the rest of the land, 1.3% is settled (buildings or roads) and 41.5% is unproductive land.

It lies north of Bourg-Saint-Pierre and north-west of the Grand Combin .