Adrian Smiseth Sejersted (born 16 July 1994) is a Norwegian World Cup alpine ski racer, and specializes in the speed events of downhill and super-G. At the Junior World Championships, he finished eighth and ninth in 2012, followed by a bronze medal in super-G in 2013.

In 2014 he improved further, first to a silver medal in super combined before he won the downhill.

Smiseth Sejersted made his World Cup debut in March 2014 in Lenzerheide, where he also collected his first World Cup points with a 14th-place finish.

He represents the sports club Stabæk IF,[2] and is the younger brother of retired ski racer, Lotte Smiseth Sejersted.

This biographical article relating to alpine skiing in Norway is a stub.