Back ويليام الثالث ملك صقلية Arabic ويليام التالت ملك صقليه ARZ Vilim III, kralj Sicilije BS Guillem III de Sicília Catalan Vilém III. Sicilský Czech Vilhelm 3. af Sicilien Danish Wilhelm III. (Sizilien) German Γουλιέλμος Γ΄ της Σικελίας Greek Guillermo III de Sicilia Spanish Guillaume III (roi de Sicile) French
| William III | |
|---|---|
 A near-contemporary depiction of William (far left) with his father (far right) and brother (middle). | |
| King of Sicily | |
| Reign | February – October 1194 |
| Coronation | January/February 1194 |
| Predecessor | Tancred |
| Successor | Constance & Henry I |
| Born | c. 1186 Palermo, Kingdom of Sicily |
| Died | c. 1198 Alt-Ems, Swabia, Holy Roman Empire |
| House | House of Hauteville |
| Father | Tancred, King of Sicily |
| Mother | Sibylla of Acerra |
William III (Italian: Guglielmo III; c. 1186 – c. 1198), a scion of the Hauteville dynasty, was the last Norman King of Sicily, who reigned briefly for ten months in 1194. He was overthrown by his great-aunt Constance and her husband Emperor Henry VI.