Guy of Spoleto (died 12 December 894), sometimes known by the Italian version of his name, Guido, or by the German version, Wido, is the Margrave of Camerino from 880 (as Guy I or Guy II) and then Duke of Spoleto and Camerino (as Guy III) from 883.

He was crowned King of Italy in 889 and Holy Roman Emperor in 891.

He dies in 894 while fighting for control of the Italian peninsula.

Guy is married to Ageltrude, daughter of Adelchis of Benevento, who bears him a son named Lambert.