Family name Marein (Marein 
, Мареин 
) , all around the world, is a rare cognomen. The surname Marein is characteristic of Myanmar, where it is a rare surname, Argentina, where it is a very rare surname, and Russia. Not in comparison with a country's population, it most frequently occurs in Myanmar, Russia, and the United States. Likewise, Marein is the forename as well as the last name.