St. Martin or the Martinskirche is a Protestant parish church in the German town of Kassel. It is also the preaching-church of the bishop of the Evangelical Church of Hesse Electorate-Waldeck. It is in the Gothic style and was begun in 1364 and completed in 1462. It became a Protestant church in 1524, when Philip I, Landgrave of Hesse converted to Protestantism. From the 16th century until the end of the 18th century it was the burial place for the landgraves of Hesse.
It was rebuilt to a slightly modified plan after the Second World War. It is a three-aisle six-bayed hall church with two towers at the west end. Its '5/8-Schluss' choir dates to the Gothic period - this style is named after the eight segments to the vaults in the five east-end arches. From 1960 until his death in 1993 the organist Klaus Martin Ziegler was the church's cantor.
Coordinates 51°19'2.002" N 9°30'4.683" E