Cognomen ماسن (Masen 
, ماسن 
) , in all the world, is a rare surname. The family name ماسن is characteristic of Estonia, where it is quite a rare surname, Malaysia, where it is a rare surname, and Thailand. In absolute terms, this name is the most popular in Indonesia, Thailand, and the United States. More frequently, ماسن is the forename as well as the last name.