Cognomen Gacser (Gacser 
) , worldwide, is a rare family name. The family name Gacser is habitual in Hungary, where it is quite a rare surname, France, where it is a very rare surname, and Canada. Not in comparison with a country's population, this name is the most popular in Hungary, France, and the United States. Much less frequently, Gacser is the forename as well as the last name.