William FitzAlan

William FitzAlan may refer to:


 * William FitzAlan, Lord of Oswestry (died 1160)
 * William FitzAlan, 1st Lord of Oswestry and Clun (died 1210), son of the above
 * William FitzAlan, 2nd Lord of Oswestry and Clun (died 1215)
 * William Fitzalan, 9th Earl of Arundel (1417–1487), descendant of the FitzAlans of Oswestry
 * William Fitzalan, 11th Earl of Arundel (1476–1544)