Cognomen Stren (Strand 
, سترين 
, Stren 
) , worldwide, is a common last name. The family name Stren is characteristic of Northern Europe, particularly Norway, where it is a common surname, Sweden, where it is quite a common surname, and Denmark. In absolute terms, it most frequently occurs in Norway, the United States, and Sweden. Very seldom, Stren is the forename as well as the last name.