village and former municipality in Val Müstair in the canton of Grisons in Switzerland

Müstair was a municipality in Inn in the canton of Graubünden, Switzerland. On 1 January 2009 the municipalities Müstair, Fuldera, , Santa Maria Val Müstair, Tschierv and Valchava joined together to become the new municipality Val Müstair.

coat of arms

The easternmost point of Switzerland, at Piz Chavalatsch, is in the municipality.

The main tourist attraction in the area is the Benedictine Convent of Saint John.