Saint Cyriakus, Gernrode

Saint Cyriakus is a medieval church in Gernrode, Saxony-Anhalt, Germany. It is one of the few surviving examples of Ottonian architecture, built in 959/960-965 by Margrave Gero, although it was restored in the 19th century. From its foundation until 1614 Saint Cyriakus was the collegiate church of the abbey of Gernrode, also founded by Margrave Gero. The church and the abbey became Protestant in the mid-sixteenth century, and the church is now used by the Protestant community of Gernrode.

The church is part of the tourist route Romanesque Road, as it is an important example of an Ottonian church which inspired later, fully Romanesque, churches and cathedrals.