Altstädter Pfarrkirche, Lutheran church in the Baroque old town of Erlangen, Germany

The Altstädter Pfarrkirche is a Lutheran church building in Erlangen featuring a tower that rises in distinct tiers with classical column styles ascending toward an octagonal crown. Inside, a barrel-vaulted ceiling displays geometric plaster work above the space, with a combined pulpit and altar arrangement positioned in the choir area.

A 1288 chapel on this site was replaced after a 1632 fire and again after the 1706 Altstadt fire. The present church was built from 1709 to 1721 to plans by Bamberg architect Wenzel Perner, with Erlangen's Johann Georg Kannhäuser involved; the foundation stone was laid on 29 July 1709 and consecration followed on 2 March 1721. The 55.5-metre west tower was finished in 1726.

The church's fair, the Altstädter Kirchweih, has been held since 1755 as the Bergkirchweih at the Altstädter Schießhaus at the foot of Erlangen's castle hill. It is celebrated at Trinitatis, the Sunday after Pentecost, and now runs twelve days, from the Thursday before Pentecost to the Monday after Trinitatis, drawing over a million visitors. The organ on the west gallery is used for services and for concerts by the Bach-Verein Erlangen.

The church sits in the heart of downtown Erlangen at Martin-Luther-Platz and is easily reached on foot from surrounding streets. Visiting during daytime on weekdays works best, as services and special events may limit access at other times.

The organ was built in 1961 by E. F. Walcker & Cie. of Ludwigsburg and restored in 1996/97 by Thomas Jann. It has 46 stops on three manuals and pedal, and its Baroque case by Johann Christoph Wiegleb dates from around 1720, widened from five to nine axes around 1760 by Georg Ludwig Krämer of Bamberg.