Cognomen Гартвіг (Hartvig 
, Гартвіг 
) , worldwide, is quite a rare family name. The family name Гартвіг is characteristic of Denmark, where it is quite a common surname, Norway, where it is quite a rare surname, and Hungary. In absolute terms, the name is most common in Denmark, Argentina, and Sweden. Much less frequently, Гартвіг is the forename as well as the last name.