Marienberg Abbey (German: Abtei Marienberg; Italian: Abbazia Monte Maria) is a Benedictine abbey in Mals , Vinschgau in South Tyrol , northern Italy. It was founded in 1149 or 1150 by Ulrich von Tarasp and other nobles.

It has maintained a long tradition of education and, at 1,340 m, it is Europe’s highest abbey. It retains a Baroque style with Romanesque elements, and has some well-maintained frescos.

The history of the foundation goes back to Charlemagne, who established the St. John Benedictine monastery between 780 and 786 in Müstair further up in the valley.