>
Last name Kullberg (Kullberg ) , across the world, is quite a rare cognomen. The last name Kullberg is habitual in Northern Europe, particularly Sweden, where it is quite a common surname, Finland, where it is quite a rare surname, and Denmark, where it is a rare surname. In absolute terms, the name is most common in Sweden, Finland, and the United States. Very seldom, Kullberg is the forename as well as the last name.