William Louis, Duke of Württemberg
| William Louis | |
|---|---|
William Louis, c. 1670  | |
| Duke of Württemberg | |
| Reign | 2 July 1674 – 23 June 1677 | 
| Predecessor | Eberhard III | 
| Successor | Eberhard Louis | 
| Born | 7 January 1647 Stuttgart  | 
| Died | 23 June 1677 (aged 30) Hirsau Castle  | 
| Spouse | |
| Issue | 
  | 
| House | Württemberg | 
| Father | Eberhard III, Duke of Württemberg | 
| Mother | Anna Catharina of Salm-Kyrburg | 
William Louis (7 January 1647 – 23 June 1677) was Duke of Württemberg from 1674 until his death in 1677.
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.