Stian Sivertzen (born 28 March 1989) is a Norwegian snowboarder.
He represents Kongsberg IF.
He placed eighth overall in the 2007-08 Snowboarding World Cup, and second in his special event boardercross, where he collected all of his 4180 points.
He took his first victory in a World Cup event in September 2007, and has four podiums so far.