Italo Zilioli (born 24 September 1941) is an Italian former professional cyclist.

Born in Turin, he won 58 races as a professional, including the 1966 Züri-Metzgete. He also totaled 5 stage wins at the Giro d'Italia; however, he never won the major tour of his country. He finished the Giro in the top 5 on six occasions and made the podium four times, finishing 2nd in 1964, 1965 and 1966, and finishing 3rd in 1969 as a member of Filotex.

During the 1970 Tour de France he won stage 2 and took over the Yellow jersey, which caused a minor controversy as it angered his teammate Eddy Merckx, who was anticipated to wear the jersey for the majority of the race and repeat as champion.^[1] Zilioli held the jersey for three stages before relinquishing it to Merckx.

Zilioli lives in the province of Cuneo (Piedmont) and is responsible for the stage starts for Giro d'Italia.