Gustav Weder (born 2 August 1961 in Diepoldsau) is a Swiss bobsledder who competed from the late 1980s to the early 1990s. Competing in three Winter Olympics, he won four medals with two gold (Two-man: 1992, 1994), one silver (Four-man: 1994), and one bronze (Four-man: 1992).
Weder also won eight medals at the FIBT World Championships with four golds (Two-man: 1990, Four-man: 1989, 1990, 1993) and four silvers (Two-man: 1989, 1991, 1993; Four-man: 1991).
He was also a Bobsleigh World Cup champion four times (Combined men's: 1988-9, 1990-1; Two-man: 1988-9, Four-man: 1990-1).
Known for his intensity, Weder would videotape every one of his bobsleigh runs he raced on and study those videos for hours. It was so intense that Weder was caught one night during the FIBT World Championships 1990 in St. Moritz scrapping ice off of a difficult corner on the track. Bobsleigh officials allowed him to compete, and he won his second world championship in the four-man Event.
After studies in Switzerland and Canada, Weder finished his education with a PhD with Arnd Krüger in Social Sciences at the University of Göttingen. He has been working in Human Resources for major Swiss companies.