Samnaun (Romansh: Samignun) is a high Alpine village and a valley at the eastern end of Switzerland and a municipality in the Engiadina Bassa/Val Müstair Region in the Swiss canton of Graubünden.

Of the rest of the land, 0.9% is settled (buildings or roads) and the remainder (41.2%) is non-productive (rivers, glaciers or mountains).

It consists of five village sections; Compatsch, Laret, Plan (Plaun), Ravaisch and Samnaun.

The exception was maintained even after a road was built in 1905 linking Samnaun to Martina, at the most eastern point of the Lower Engadine.

[5] In winters with exceptionally heavy snowfall that blocks the road, Samnaun at times can be reached only via Austria.

The Silvretta Arena Samnaun / Ischgl ski area (located 1,400–2,875 m (4,593–9,432 ft) above sea level) has about 238 km (148 mi) of slopes.

[4] Uniquely within Switzerland, the form of German spoken by the residents of Samnaun is a variant of the Bavarian language.