Guy I may refer to:
- Guy I of Albon (c. 1000–1070)
- Guy I of Clermont (c. 1255 – 1302), Marshal of France, Seigneur (Lord) of Offemont
- Guy I, Count of Blois (died 1342)
- Guy I of Gibelet, of the Embriaco family
- Guy I of Luxembourg, Count of Ligny (1340–1371)
- Guy I of Montlhéry (died 1095)
- Guy I of Ponthieu (died 1100)
- Guy I de la Roche (1205–1263), Duke of Athens
- Guy I of Spoleto (died 860)
Other
- Guy #1, a character in We Like Sportz by The Lonely Island
Topics referred to by the same termThis disambiguation page lists articles about people with the same name. If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: