Surname Øistein (Øistein 
) , worldwide, is an extremely rare family name. The surname Øistein is habitual in Northern Europe, particularly Norway, where it is a very rare surname. Much more prevalently, Øistein is the forename as well as the last name.
Lie, Solberg, Bakketun, Boassen, Bratlie, Karlsen, Poverud, Johnsen, Thorsen, Espenes, Eriksen, Hanssen, Unnerud, Mathisen, Andersen, Blekkerud, Pedersen, Lundberg, Johansen, Pettersen, Lysenstøen, Haraldstad, Wickle, Fjæra, Haugen, Hansen, Hay, Berg, Bøe, Kjos, Mjærum, Svere, Klemp, Rosen, Reppe, Riber, Kristiansen, Røtne, Hauge, Hagen, Olsen, Monsen, Strøm, Brodal, Kvarme, Resell, Larsen, Nilsen, Røvde, and Christoffersen