Landgravine Marie Louise of Hesse-Kassel (7 February 1688 – 9 April 1765) was a daughter of Charles I, Landgrave of Hesse-Kassel, and Maria Amalia of Courland. By her marriage to John William Friso, Prince of Orange, she became Princess consort of Orange, a title last held by Mary II of England. Like her husband, she is an ancestor of all currently reigning monarchs in Europe.