Stephan Waser (sometimes shown as Stephen Waser) (March 10, 1920 - June 19, 1992) was a Swiss bobsledder who competed from the late 1940s to the early 1950s. At the 1952 Winter Olympics in Oslo, he won bronze medals in both the two-man and four-man events.
Waser also won four medals at the FIBT World Championships with three golds (Two and Four-man: 1947, Two-man: 1950) and one silver (Four-man: 1950).