St. Stephanus, Romanesque church in Blieskastel, Germany

Klosterkirche Böckweiler is a church building in Blieskastel featuring thick stone walls, rounded arches, and sturdy pillars that display its Romanesque structure. The building stands as a solid stone construction with the typical hallmarks of medieval religious architecture.

A document of Abbot Luidolf dated 30 November 1149 first mentions the Romanesque church as a priory of the Benedictine abbey of Hornbach. The choir tower with its three-conch choir, the only surviving medieval parts, was built around that time. After severe war damage in 1939/40, excavations in 1940–1942 uncovered a Carolingian basilica and Roman villa remains; the church was restored in 1949/50.

Since around 1535 Böckweiler has been Protestant, yet the church is one of Germany's 65 simultaneous churches and the only one in the Saarland: the Catholic community may hold eight Sunday masses a year here. The green sign beside the apse arch reads "ICH BIN DAS BROT DES LEBENS".

The church stands in Böckweiler, a district of Blieskastel, not in the town centre. Excavation finds east of the church, including the Carolingian basilica foundations, are marked by stones in the ground. The interior is entered from the west; the chancel with its three apses faces east.

The church is one of 65 simultaneous churches in Germany and the only one in Saarland; the Catholic community may hold eight Sunday masses there each year. Since 2020 it has also borne the title "Church of the Year", awarded by the Stiftung KiBa.