Guy III, king of Italy and Holy Roman Emperor
Guy III of Spoleto (German: Wido, Italian: Guido; died 12 December 894) was the margrave of Camerino from 880 and then duke of Spoleto and Camerino from 883. He was crowned king of Italy in 889 and emperor in 891. He died in 894 while fighting for control of the Italian Peninsula.

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