Guillaume Nantermod (born 18 September 1975) is a Swiss retired snowboarder.

In the 1999–2000 World Cup season, he finished 2nd in snowboardcross and clinched two victories.

He retired in 2007 after the World Championships on home soil where he finished 9th.

After retiring from competitive sports, he worked as instructor and coach and was British Ski & Snowboard Cross Head Coach.

[2] This biographical article related to snowboarding in Switzerland is a stub.