Karin Elisabeth Dreijer (born 7 April 1975) is a Swedish singer-songwriter and record producer. Dreijer was one half of the electronic music duo The Knife, formed with their brother Olof Dreijer. They released their debut solo album under the alias Fever Ray in January 2009. Their second studio album, Plunge, under the same alias, was released in October 2017.

Dreijer's vocal style is notable for both shrill and deep tones, and also the use of multitracked vocals with the use of pitch-shifting technology. Visually, they use masks, face and body paint, intricate costumes, and other theatrical elements in photo shoots, videos and live performances, during which they often perform behind a gauze screen that partially obscures the audience's view.