St.-Bartholomäi-Kirche Altenburg, Gothic church in Altenburg, Germany.

St.-Bartholomäi-Kirche Altenburg is a Gothic hall church with three aisles, whose vaults feature geometric patterning throughout the interior space. The choir displays medieval wall paintings, and the building contains a large organ and a carved wooden altarpiece from the late medieval period.

A Romanesque hall church with a west transept tower, recessed choir and apse was first mentioned in 1215, when Frederick II granted its patronage to the Augustinian canons. The Gothic hall church was completed in 1443, incorporating the two-tower west front of its predecessor. After one medieval tower collapsed, the second was demolished and a central Baroque tower built in 1660–1669.

Georg Spalatin, the Reformation theologian and adviser to the Saxon electors, served as pastor here and was buried in the church. The building received the European Cultural Heritage Label in 2011 as one of 22 Reformation sites in Germany. The pulpit, font, pews and organ case date from 1881, and the organ was built by Friedrich Ladegast.

The interior is easy to navigate and offers clear views of the architecture and artworks from various vantage points throughout the space. Visitors should allow time to examine the details of the choir paintings and other decorative elements at a leisurely pace.

The crypt was walled off and forgotten until its rediscovery in 1843; it had served as a burial place into the 17th century. In 1876 the graves inside it and in the nave were cleared to make room for a heating system. Two blocked round arches on the north choir wall mark where a matching north crypt was begun but never finished.