William IV, Landgrave of Hesse-Kassel
| William IV | |
|---|---|
Portrait by Kaspar van der Borcht, 1577 | |
| Landgrave of Hesse-Kassel | |
| Reign | 31 March 1569 – 25 August 1592 |
| Successor | Maurice |
| Born | 24 June 1532 Kassel, Landgraviate of Hesse, Holy Roman Empire |
| Died | 25 August 1592 (aged 60) Kassel, Landgraviate of Hesse-Kassel, Holy Roman Empire |
| Spouse | |
| Issue More... | |
| House |
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| Father | Philip I, Landgrave of Hesse |
| Mother | Christine of Saxony |
William IV of Hesse-Kassel (24 June 1532 – 25 August 1592), also called William the Wise, was the first Landgrave of the Landgraviate of Hesse-Kassel (or Hesse-Cassel). He was the founder of the oldest line, which survives to this day.