St. Mariä Himmelfahrt, Catholic church building in Bad Blankenburg, Germany.

St. Mariä Himmelfahrt is the Roman Catholic filial church at Pestalozzistraße 28 in Bad Blankenburg, built from 1954 to 1956 to designs by architect Johannes Reuter. The post-war building carries an altar painting by Rudolf Brückner-Fuhlrott and a 1971 Schönefeld organ with 18 registers on two manuals and pedal.

The foundation stone was laid in 1954 during Easter season, with consecration taking place two years later in 1956. The building rose during the post-war period and reflects a phase of church development in the region.

The church is dedicated to the Assumption of Mary (Mariä Himmelfahrt), celebrated on 15 August. Its altar painting was made by Rudolf Brückner-Fuhlrott. Since 2021 the parish has been led by priest David Wolf, after Georg Schuchardt (2012–2020).

Access is normally straightforward as the church building sits centrally in Bad Blankenburg. Visitors should remember that this is an active place of worship and entering with respect is expected.

The first Catholic Mass since the Reformation in Bad Blankenburg was celebrated on 1 May 1931 in the town hall, twenty-three years before the church's foundation stone was laid at Pestalozzistraße 28. The parish became independent on 14 September 1964 and was reincorporated into Rudolstadt from 1 July 2012.