| William Louis | |
| Succession: | Duke of Württemberg |
| Reign: | 2 July 1674 – |
| Predecessor: | Eberhard III |
| Successor: | Eberhard Louis |
| House: | Württemberg |
| Father: | Eberhard III, Duke of Württemberg |
| Mother: | Anna Catharina of Salm-Kyrburg |
| Issue: |
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| Birth Place: | Stuttgart |
| Death Place: | Hirsau Castle |
William Louis (7 January 1647 – 23 June 1677) was Duke of Württemberg from 1674 until his death in 1677.[1]
William Louis was born in Stuttgart, the ninth child of Eberhard III, Duke of Württemberg, and his first wife Anna Catharina of Salm-Kyrburg.
At the age of 30, the Duke died unexpectedly of a heart attack at the stop-over in Schloß Hirsau. His widow Magdalena Sibylla became regent of Württemberg between 1677 and 1693, until her son reached adulthood.
He married on 6 November 1673 in Darmstadt with Magdalena Sibylla of Hesse-Darmstadt, and had 4 children: