Reformed church in Hannover, Protestant church in Mitte district, Hannover, Germany

The Reformed Church at Lavesallee 4 is a neo-Gothic stone building erected from 1886 to 1898 to plans by Hubert Stier, with Georg Heußner as executing architect. A tall grey-brown stone tower with a louvered arched opening and belfry stands beside the gabled nave, whose steep dark roof fronts a large traceried pointed window. Red ivy climbs the tower's lower section; three tall arched windows with dark grilles sit between buttresses along the side wall. The tower carries no helm today.

German Reformed worshippers opened their first church here in 1705, backed by Sophie of Hanover; French Huguenots had formed a congregation in 1697. By the late 19th century the building was dilapidated, so Hubert Stier designed a neo-Gothic replacement erected 1886–1898 under site architect Georg Heußner. Air raids in October 1943 left only the outer walls; Dieter Oesterlen rebuilt it in 1956, keeping the exterior and redesigning the interior.

The congregation's roots are Huguenot and German Reformed: French Huguenots founded their community in 1697, German Reformed believers in 1703. The Kirchsaal is kept plain, with no images, following the ban on graven images; there is no altar, only a communion table, and candles and a cross are not customary. Psalms hold a fixed place in the liturgy, and an English-language service is held on the second and fourth Sunday of each month.

The church stands at Lavesallee 4 in the Calenberger Neustadt, opposite the Lower Saxony State Archives and near the Waterlooplatz ministries. The entrance was moved to the middle of the nave during the 1956 rebuild, and the raised floor places a foyer and parish hall beneath the church room. The tower has no spire, so look for the flat-topped belfry when approaching.

The tower has stood without a spire since the 1943 air raids gutted the church; Dieter Oesterlen rebuilt only the outer walls to the original design by 1956 and raised the floor, placing a foyer and parish hall beneath the sanctuary. Queen Victoria gave the three tower bells, cast in 1897 at Hildesheim; the middle one was recast in 1966 after the war.