William de Ferrers
# William de Ferrers

William de Ferrers or Guillaume de Ferrières may refer to:

* William de Ferrers, 3rd Earl of Derby (d. 1190)
* William de Ferrers, 4th Earl of Derby (c. 1198–c. 1247)
* William de Ferrers, 5th Earl of Derby (1193–1254)
* Guillaume de Ferrières (c. 1150 – ?April 1204), the Vidame de Chartres, a French trouvère
