St. Jürgen-Kirche, Gothic Revival church in Jürgensby district, Flensburg, Germany.

St. Jürgen-Kirche is a red-brick church with a tall, slender spire above a clock face and a row of small arched openings. Its west end has a polygonal chancel flanked by two round towers, and the roof carries three smaller pointed spires. The interior is covered by a net vault.

The parish of St. Jürgen was founded on 1 July 1895, separating from the Adelby parish, and first held services in the Heiliggeistkirche. The church was built from 1903 to 1907 on the site of the medieval St. Jürgen hospital for lepers and plague victims, which had long ceased to exist. Oskar Hossfeld designed it on brick Gothic models, with Alexander Wilhelm Prale directing the works.

The name Jürgen is the North German form of George, the church's patron saint. The pulpit carved around 1600 by Heinrich Ringerink came from the Heiliggeistkirche, where the congregation first worshipped after its founding in 1895. The galleries carry 20 New Testament reliefs framed by carved figures of Christian virtues and Protestant teachers, including a rare sculpted likeness of the Schleswig reformer Hermann Tast.

The church stands at Jürgensgaarder Straße 1 in Jürgensby, opposite the Offener Kanal Flensburg building, with the parish hall and parsonage nearby. It was closed from 2012 and reopened on 15 March 2015 after a renovation costing 650,000 euros, so check current opening times before travelling. The main portal is in the tall east tower, beneath the stone inscription of Matthew 5:6.

The church's windows were damaged in June 1945 by the Kielseng explosion, an ammunition blast in Flensburg's harbour area. The building also serves as a landmark of the city's east shore in drawings, alongside the Mürwik water tower and the naval academy tower.