Siegfried Grabner (born February 4, 1975 in Waiern, Carinthia) is an Austrian professional snowboarder. At the 2006 Winter Olympics in Turin, Italy he won bronze in the Parallel Giant Slalom competition. Having won the Junior World Championship 1994 in Slovenia, he decided to go professional. He won the European Championship 1995 in Finland, and became part of the Burton Alpine Team. In 2003 he won the Parallel Giant Slalom World Championship in Kreischberg, Austria. In 2005 he ranked third in Whistler, British Columbia. Grabner resides in La Massana, Andorra.