St. Mauritius, Brutalist church building in Saarbrücken, Germany

St. Mauritius is a brutalist church with a hexagonal floor plan where concrete pillars branch into the roof, creating an abstract interpretation of ribbed vaulting. A 37-meter concrete tower on the western side holds four large portals that provide access to the main worship space.

Construction began in 1953 under architects Albert Dietz and Bernhard Grothe, responding to the growth of the Catholic population after World War II. The building reflects the modern architectural thinking of its era and shaped the city's postwar identity.

The name Mauritius refers to Saint Maurice, the patron of the former parish. Since the 2003 profanation, the annual St. Mauritius parish festival has been held at the mother church St. Jakob instead. The building later served briefly as a venue for the Saarland University of Music.

The building has stood empty since its brief use by the Saarland University of Music, and on 7 March 2024 the Saarland Higher Administrative Court approved its demolition. The site is entered from Moltkestraße through the open ground floor of the 37.12 m concrete tower, which leads into a courtyard with a round fountain before the church itself.

The organ, built in 1956 by Hugo Mayer Orgelbau, had its pipes placed on the concrete slab above the console, with an open pipe facade showing all 25 stops. In 2017 the instrument was sold to the parish of San Marcello in Piedimonte Matese, Campania. The five bronze bells by Mabilon went to St. Martinus in Hermeskeil in 2015 and ring there again since 2017.