File:The Marble Church, Copenhagen.jpg

English: Frederik's Church (Danish: Frederiks Kirke), also spelled Frederick's Church in English, and popularly known as The Marble Church (Danish: Marmorkirken) is a church in Copenhagen, Denmark. It is located just north of Amalienborg Palace.

The church was designed by the architect Nicolai Eigtved in 1740 and was along with the rest of Frederiksstaden, a district of Copenhagen, intended to commemorate the 300 years jubilee of the first coronation of a member of the House of Oldenburg.[1] Frederick's Church has the largest church dome in Scandinavia with a span of 31m, though there are three larger domes elsewhere in Europe. The dome rests on 12 columns.[1] The inspiration was probably St. Peter's Basilica in Rome. The foundation stone was set by king Frederick V on October 31, 1749, but the construction was slowed by budget cuts and the death of Eigtved in 1754. In 1770, the original plans for the church were discarded by Johann Friedrich Struensee. The church was left incomplete and, in spite of several initiatives to complete it, stood as a ruin for nearly 150 years. In 1874 Andreas Frederik Krieger, at the time Denmark's Finance Minister, sold the ruins of the uncompleted church and the church square to Carl Frederik Tietgen for 100,000 Rigsdaler — none of which was to be paid in cash — on the condition that Tietgen would build a church in a style similar to the original plans and donate it to the state when complete, while in turn he acquired the rights to subdivide neighboring plots for development.[2]. The deal was at the time highly controversial. On 25 January 1877, a case was brought by the Folketing at the Court of Impeachment (Danish: Rigsretten), Krieger being charged with corruption over this deal. He was, however, eventually acquitted. Tietgen got Ferdinand Meldahl to design the church in its final form and financed its construction. The original plans, for the church to be built almost entirely from marble, had to be discarded and instead construction was completed mostly with limestone. It was finally opened on August 19, 1894. Above the columns is inscribed: HERRENS ORD BLIVER EVINDELIG (Danish: "the word of the Lord endureth for ever." – 1 Peter 1:25, KJV).

A series of statues of prominent theologians and ecclesiastical figures, including one of the Danish philosopher Kierkegaard (who incidentally was very critical of the established church by the end of his life), encircles the grounds of the building.