Katharina "Karin" Margareta Mader (1910âÂÂ1973) was a Dutch artist known for her floral paintings.
Mader was born on 27 February 1910 in Bayreuth, Germany. She was a student of Josef Verheijen. Her work was included in the 1939 exhibition and sale Onze Kunst van Heden (Our Art of Today) at the Rijksmuseum in Amsterdam. She was a member of the Federatie van Verenigingen van Beroeps Beeldende Kunstenaars (Federation of Associations of Professional Visual Artists) in Amsterdam. Mader died on 11 July 1973 in Amstelveen.