Cognomen Rapum (Raposo 
, Rapum 
) , in the entire world, is a common surname. The last name Rapum is habitual in Portugal, where it is a common surname, the Dominican Republic, where it is quite a common surname, and Brazil, where it is quite a rare surname. Not in comparison with a country's population, the name is most common in Brazil, Portugal, and the United States. Much less frequently, Rapum is the forename as well as the last name.