Maurice of Hesse-Kassel, also called Maurice the Learned or Moritz, was the Landgrave of Hesse-Kassel in the Holy Roman Empire from 1592 to 1627.

William IV of Hesse-Kassel, also called William the Wise, was the first Landgrave of the Landgraviate of Hesse-Kassel. He was the founder of the oldest line, which survives to this day.