Surname Екстрем (Ekström 
, Екстрем 
) , in the entire world, is quite a common cognomen. The family name Екстрем 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. Much less frequently, Екстрем is the forename as well as the last name.