Peter Steiger (born 23 January 1960) is a retired Swiss cyclist. Between 1984 and 1991 he won seven national championships in motor-paced racing. In this discipline he also won the world championships in 1992 and finished in second place in 1990 and 1991. Steiger was also a successful road racer and won the Bay Classic Series in 1989.

In March 1993 he was hit by a truck during training in Mexico and had to retire due to injuries.