Sergio Siorpaes (born 20 July 1934, in Cortina d'Ampezzo, Italy) is an Italian bobsledder who competed from the late 1950s to the mid-1960s. At the 1964 Winter Olympics in Innsbruck, he won bronze medals in the two-man and four-man events.
Siorpaes also won seven medals at the FIBT World Championships with five golds (Two-man: 1961, 1963, 1966; Four-man: 1960, 1961) and two silvers (Two-man: 1958, 1959).