Wilhelm Aschwanden (born December 18, 1969) was a Swiss cross country skier who competed from 1992 to 2004. Competing in three Winter Olympics, he earned his best career and individual finishes at Nagano in 1998 with a sixth in the 4 x 10 km relay and a 22nd in the 50 km event, respectively.
Aschwanden's best finish at the FIS Nordic World Ski Championships was 26th in the 30 km event at Trondheim in 1997. His best World Cup finish was tenth in a 10 km event in Italy in 1998.
Aschwanden earned thirteen career victories at lesser events up to 50 km from 2001 to 2004.