Wilhelm, Hereditary Prince of Hesse-Kassel

Prince Wilhelm, Hereditary Prince of Hesse-Kassel (31 January 1625 – 11 July 1626) was the Hereditary Prince of Hesse-Kassel as the heir apparent of William V, Landgrave of Hesse-Kassel. Wilhelm died in infancy and his younger brother Prince Wilhelm succeeded him as Hereditary Prince.