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Family name Ahlberg (Ahlberg , Альберг , אלברג ) , throughout the world, is quite a common surname. The surname Ahlberg is characteristic of Northern Europe, particularly Sweden, where it is quite a common surname, Finland, where it is quite a rare surname, and Estonia. In absolute terms, it is commonest in Sweden, the United States, and Finland. Much less frequently, Ahlberg is the forename as well as the last name.