William de Windsor | |
|---|---|
| Baron Windsor | |
 Arms of Windsor: Gules, a saltire argent between twelve crosses crosslet or | |
| Born | c. 1325 Grayrigg, Westmorland |
| Died | 15 September 1384 (aged 59–62) Haversham, Westmorland |
| Spouse(s) | |
| Father | Sir Alexander de Windsor |
| Mother | Elizabeth |
Sir William de Windsor, Baron Windsor (c. 1325–1384) was an English administrator who served as King's Lieutenant in Ireland.