Church of the Assumption, Parish church in Deggendorf, Germany.

The Church of the Assumption in Deggendorf is the town's oldest church, in the Untere Vorstadt. Its 15th-century choir, sacristy and tower adjoin a Baroque nave built between 1655 and 1657. A west extension of 1885–1889 added the porch with the figure of the Virgin as patroness of Bavaria.

Mariä Himmelfahrt is Deggendorf's oldest church. Its choir, sacristy and tower were built in the 15th century against the Romanesque nave of a predecessor church, and the Baroque nave followed between 1655 and 1657. In May 1743 Austrian troops plundered and set fire to the church during the War of the Austrian Succession; it was rebuilt from 1745 to 1760. Between 1885 and 1889 it was extended westward and given its porch with the figure of the Virgin as patroness of Bavaria. In 2025 Bishop Rudolf Voderholzer raised it to the status of Münsterkirche.

The church serves as a place for Sunday masses and religious ceremonies that happen regularly throughout the year. It shapes daily life in the city center and draws visitors who take time to observe its interior.

The building is located in the Untere Vorstadt area and is easily accessible on foot from the city center. Regular visiting hours and occasional guides make planning a visit straightforward.

An old cemetery wall runs along Hengersberger Strasse beside the building, showing how long it has stood in this part of the city. Alongside this sits a Kreuzwegstation, a station for the traditional Way of the Cross pilgrimage.