Guy de Laval may refer to:
various heads of the House of Laval:
Guy V de Laval (died 1210)
Guy VII de Laval
Guy IX de Laval (died 1333)
Guy XIII de Laval (1385–1414) Guy XIV de Laval (1406–1486) Guy XV de Laval Guy XVI de Laval (1476–1531)
Guy XX de Laval (1585–1605)
, bishop of Le Mans (1326–1338) (died 1383), married a daughter of Charles I de Montmorency (died 1388) (died 1404) (died 1484)