Cognomen Rasmos (Rasmos 
) , all around the world, is a very rare last name. The last name Rasmos is characteristic of Tanzania, where it is a very rare surname, Nigeria, where it is an extremely rare surname, and Peru. Not in comparison with a country's population, this name is the most popular in Tanzania, Nigeria, and the United States. Very seldom, Rasmos is the forename as well as the last name.