Otterberg abbey church, Religious monument in Otterberg, Germany.

Otterberg abbey church is a Romanesque stone church in the center of Otterberg, in the Palatinate region of Germany. The building has thick walls, rounded arches, and some Gothic windows added in later phases, giving the interior a layered appearance.

Construction on the monastery at the Otterbach began before 1168, and the church was consecrated on 10 May 1254 by auxiliary bishop Arnold of Semgallen, with Mary and John the Baptist as patrons. Around 1560 the monastery fell to the Palatinate, and from 1579 Reformed Walloon refugees used the church. In 1691 Count Palatine John William allowed Catholics to share it, and in 1698 Lutherans received the same right; a partition wall dividing choir and nave was removed in 1979–1981.

The church is shared by Protestant and Catholic congregations, an arrangement called a simultaneum that has been in place here since the 18th century. Visitors attending a service may notice how the interior space is divided to serve both communities.

The church sits in the center of Otterberg and is easy to reach on foot from any part of town. The interior floors can be uneven in places, so sturdy shoes are a good idea, and full accessibility for people with reduced mobility is limited.

Parts of the old monastery enclosure wall were absorbed into later buildings and can still be spotted as you walk through the older parts of town. Some of these medieval stones now form the foundations or walls of houses that appear otherwise unremarkable.