Zwinglihaus Basel, Reformed church in Basel-Gundeldingen, Switzerland

Zwinglihaus is a Reformed church building in Basel-Gundeldingen, constructed from 1931 to 1932 following modern Bauhaus principles. The interior is defined by five large stained glass windows depicting biblical motifs, created by Basel artist Hanns Studer in 1985.

The building was designed by architect Willi Kehlstadt in the Bauhaus style and inaugurated on 2 October 1932. The original programme foresaw a church, a parish hall and a parsonage; the church was never built, so the hall was given liturgical use. It was renovated in 1994 and entered in the cantonal monument register in 1996.

The house takes its name from reformer Huldrych Zwingli, though the parish only joined the Zwingli community circle in 2013, when the Gundeldingen-Bruderholz parish replaced St. Elisabethen. The 1985 cycle of five large stained-glass windows with biblical scenes by Basel artist Hanns Studer shapes how the room is used liturgically today.

The church building is located in a residential neighborhood with good public transport access from central Basel. Visitors should check opening hours in advance and whether services or special events are scheduled on their intended visit day.

The original 1931–32 building programme by architect Willi Kehlstadt foresaw a church, a parish house and this community house; the church was never built, so the community house was given liturgical status instead. Its name honours reformer Ulrich Zwingli, and since 1985 Hanns Studer's five-part stained glass cycle has hung inside.