Mariä Himmelfahrt, Medieval collegiate church in Markt Indersdorf, Germany

Mariä Himmelfahrt is the Roman Catholic parish and former collegiate church of Kloster Indersdorf in Markt Indersdorf, Dachau district. The pale yellow building has a red-brown tiled roof, a double-tower facade with two square towers capped by steep grey pyramidal spires and clocks, and a smaller domed tower at the left. The nave carries a clerestory of rounded windows; the interior was refitted in Rococo style from 1752.

The building originated as the central part of Kloster Indersdorf, a significant medieval monastery complex in Upper Bavaria. Over the centuries it retained its religious role, underwent several architectural modifications, and today stands as a protected monument.

The church's dedication to the Assumption of Mary is reflected in the high altar, for which the Munich court painter Johann Andreas Wolff supplied the altarpiece after the destruction of the Thirty Years' War. The entire fresco cycle painted by Matthäus Günther and Johann Georg Dieffenbrunner in 1754–58 depicts the life of St Augustine, founder of the Augustinian Canons who served here until 1783.

The church stands in the Kloster Indersdorf district of Markt Indersdorf, in the Dachau district, behind a low wall; the two clock towers of the double-tower facade mark the entrance side. The interior is a working parish church of the Archdiocese of Munich and Freising, so services take precedence over visits. The organ, built by Anton Staller in 1988, keeps its main case from 1755.

The high altar's six over-life-size figures are late works by Munich sculptor Andreas Faistenberger, carved in 1721: Saints Peter, Paul, John the Evangelist, John the Baptist, Catherine and Margaret. Two older paintings by Johann Andreas Wolff from 1691 were reused in the new altar retable.