Søren Carl Theodor Marius Sørensen (24 July 1893 in Altona, Hamburg, Germany – 12 September 1979 in Copenhagen, Denmark) was a Danish landscape architect who is considered to be one of the greatest landscape architects of the 20th century. A contemporary of Thomas Church, Geoffrey Jellicoe and Luis Barragán he was a leading figure in the first generation of Modernists in landscape design. He is best known for designing the first Adventure playground (in partnership with Hans Dragehjelm) in Emdrup, Copenhagen.