Guy de Laval may refer to:
- various heads of the House of Laval:
- Guy I de Laval
- Guy II de Laval
- Guy III de Laval
- Guy IV de Laval
- Guy V de Laval (died 1210)
- Guy VI de Laval
- Guy VII de Laval
- Guy VIII de Laval
- Guy IX de Laval (died 1333)
- Guy X de Laval
- Guy XI de Laval
- Guy XII de Laval
- Guy XIII de Laval (1385–1414)
- Guy XIV de Laval (1406–1486)
- Guy XV de Laval
- Guy XVI de Laval (1476–1531)
- Guy XVII de Laval
- Guy XVIII de Laval
- Guy XIX de Laval
- Guy XX de Laval (1585–1605)
- Guy XXI de Laval
- Guy de Laval , bishop of Le Mans (1326–1338)
- Guy de Laval (Brumor) (died 1383), married a daughter of Charles I de Montmorency
- Guy I de Laval-Loué (died 1388)
- Guy de Laval (died 1404)
- Guy II de Laval-Loué (died 1484)