Kleine Kirche, Neoclassical church in Innenstadt-Ost, Karlsruhe, Germany.

Kleine Kirche is a church building in neoclassical style constructed from red Grötzinger sandstone with geometric proportions that echo the nearby palace. The interior provides space for community gatherings, concerts, and quiet reflection.

A wooden church for the Reformed congregation stood here from 1719 to 1721 and soon became dilapidated. Wilhelm Jeremias Müller built the present church from 1773 to 1776. It received its bells in 1807 and passed to the new evangelical congregation when the Reformed and Lutheran communities merged. Damaged in September 1944, it was rebuilt largely true to the original from 1946 to 1949.

The church is used for worship by the Protestant City Church congregation, the Protestant student community and two Orthodox communities, and it also serves as a "Church of Silence". Its name, Kleine Kirche ("Little Church"), distinguishes it from Karlsruhe's larger city church. The tower spire is crowned with a prince's hat and cross.

The church faces south, with a round vestibule beneath the north tower leading into the nave; the entrance is on Kaiserstraße 131 near the Marktplatz. It serves as a "Kirche der Stille", so visitors are asked to keep quiet. Services are shared by the Citykirche congregation, the student community and two Orthodox communities, so check times before a visit.

The 1952 ring includes a historic bell cast in 1767, kept from an earlier set; the other bells were newly cast by the Bachert foundry and tuned to f′, g′, b′ and c″. The tower helm is crowned with a prince's hat and cross, a detail easily missed from street level.