Karsten Greve (born 15 September 1946 in Dahme, Brandenburg, Germany) is a German art dealer, publisher and owner of Galerie Karsten Greve in Cologne, St Moritz, Paris and formerly Milan, specialized in the international postwar avant-garde, contemporary art and photography.In 2014, Greve was listed as one of Artnet News’ Most Admired Art Dealers and was included in Blouin's Art + Auction 2012 and 2013 Power 100 list and has been referred to as one of Europe's most influential art dealers.