Surname Massir (Massir 
) , in the world, is a rare last name. The cognomen Massir is characteristic of Morocco, where it is a rare surname, Malaysia, where it is a very rare surname, and Canada, where it is an extremely rare surname. Not in comparison with a country's population, it most frequently occurs in Morocco, the United States, and Brazil. Also, Massir is the forename as well as the last name.