Margarete Lauter (née Vetter) (9 September 1925 in Büchenbronn/Pforzheim; 2 October 2004 in Mannheim) was a German art dealer with the first Art Gallery for international contemporary art established in 1963 in Mannheim (Germany) after the Second World War 1945 mainly presenting works by German, French, Spanish, Italian, Japanese, Korean, Romanian, Belgian, Hungarian, Israeli, Slovenian, Austrian and US artists.