Globally, Йостейн (Jostein 
, Йостейн 
) is a rare boy's given name. The first name Йостейн is habitual in Norway, where it is quite a rare boy's name, Denmark, where it is a rare masculine name, and the United States, where it is an extremely rare masculine name. Very seldom, Йостейн is the last name as well as the forename.