William de Beauchamp may refer to:
- William de Beauchamp (of Elmley), (c1105–c1170), Anglo-Norman baron and sheriff
- William de Beauchamp (1185) (c.1185–1260), English judge and High Sheriff
- William de Beauchamp (d.1268), Anglo-Norman baron and sheriff
- William de Beauchamp, 9th Earl of Warwick (1237–1298), English nobleman and soldier
- William de Beauchamp, 1st Baron Bergavenny (c.1343–1411), English peer