Einar Selvik, also known by his stage name Kvitrafn (born in 1979) is a Norwegian musician known for being the drummer in the black metal band Gorgoroth from 2000 to 2004, and for fronting the Nordic folk project Wardruna, founded in 2003 and also including Gorgoroth's ex-vocalist Gaahl. Selvik and Wardruna's soundtrack work for the History Channel television show Vikings has earned him international prominence, and he also appeared as an actor on the show.

On March 1, 2016, A Piece for Mind & Mirror by Skuggsjá, a collaboration between Kvitrafn and Enslaved's Ivar Bjørnson, was announced and streamed. Prepared for the 200th anniversary of the Norwegian Constitution, the album tells the history of Norway, and was released by Season of Mist on March 11.

Selvik has also recorded with other projects including Det Hedenske Folk, Bak de Syv Fjell, Jotunspor, Sahg, Dead to this World and Faun.