Eliassen

Eliassen is a Danish and Norwegian patronymic surname, literally meaning son of Elias. It may refer to:


 * Arnt Eliassen (1915–2000), Norwegian meteorologist
 * Grete Eliassen (born 1986), Norwegian freestyle skier
 * Petter Eliassen (born 1985), Norwegian cross-country skier
 * Sven G. Eliassen (born 1944), Norwegian historian