St. Johanniskirche, Gothic Revival church in Zentrum, Germany.

St. Johanniskirche is a plain church with light grey render and a rectangular ground plan, its steep roof covered in black slate. The square west tower is built of Hilbersdorf porphyry tuff with two massive pilasters per side, topped by a copper-clad roof and a cross. Only the three pointed-arch windows at the apse recall its Gothic origin; the tower was rebuilt at reduced height after 1945.

A predecessor building was first documented in 1264, dedicated to John the Baptist and belonging to the Benedictine monastery of St. Marien, then outside Chemnitz's town boundary. It was destroyed several times, including by the Hussites in 1430 and in the Schmalkaldic War, and rebuilt last in 1566 after the Reformation. From 1875 a congregation used it again and it was heavily rebuilt in Gothic Revival style; in 1913 Erich Basarke removed those forms, and in 1945 the west tower was partly destroyed and later rebuilt at reduced height.

Since 1997 the church has been used as a youth church, with a youth café and youth parish office on the first floor of the western annex. The name refers to John the Baptist, to whom the church is dedicated; it belonged to the Benedictine monastery of St. Marien. The 1475 Johannisglocke, cast by Oswald Hilliger, is the oldest bell in Chemnitz.

The church stands in the Park der Opfer des Faschismus on Theresenstraße, in the Zentrum district. Since 1997 it has served as a youth church, with a youth café and the youth parish office on the first floor, reached through a side entrance near the west tower. The west tower was rebuilt only to a reduced height after its partial destruction in 1945.

The oldest bell in Chemnitz hangs in the tower: the Johannisglocke, cast in 1475 by Oswald Hilliger, measures 118.5 cm across. Two more bronze bells were added in 1981 by the Schilling foundry in Apolda, the larger a faithful copy of its Baroque predecessor. The 1722 Silbermann organ was sold to Auligk in 1879 and replaced in 1913 by a Jehmlich instrument.