Santa Maria Val Müstair (Romansh: Soncha Maria) is a village in the Val Müstair municipality in the district of Inn in the Swiss canton of Graubünden. In 2009 Santa Maria Val Müstair merged with Lü, Müstair, Fuldera, Tschierv and Valchava to form the municipality of Val Müstair.The village is located in the Val Müstair sub-district (now Val Müstair municipality) of the Inn district. It is along the Umbrail pass road. It consists of the cross-shaped village of Sta. Maria Val Müstair and the alpine settlements of Craistas, Büglios and Pütschai as well as the hamlet of Sielva which includes the hospital. Until 1995 Sta. Maria Val Müstair was known as Santa Maria im Münstertal.