Burgkirche (Castle Church) was a church of the German Reformed Church in Königsberg, Prussia. By order of the Friedrich Wilhelm I, it was built in 1690-1696 by Johann Arnold Nering. It was modeled after the Nieuwe Kerk in The Hague It was opened by King Friedrich I on 23 January 1701.
The wooden vault of the nave was covered with stucco, only the apses had a stellar vault. The pulpit was on the long side of the nave covered with a crown. The organ was the work of Johann Josua Mosengel and was, like many organs in Königsberg, decorated with the Prussian eagle. The church door was built in 1727 with the allegorical figures of justice, love and charity and was founded by Charles Cabrit.
Between 1817 and 1945 the congregation formed part of the Evangelical Church in Prussia, a church body comprising Reformed, Lutheran and United Protestant comngregations. In the Second World War, the church was bombed by the Allies in 1944 and was severely damaged and demolished in 1969.