Cognomen Guelmar (Guelmar 
) , all over the world, is an extremely rare surname. The surname Guelmar is characteristic of Latin America and the Caribbean, particularly Nicaragua, where it is a very rare surname, Honduras, and Venezuela, where it is an extremely rare surname. Measured by absolute frequency, it is the most numerous in Latin America and the Caribbean, particularly Nicaragua, Mexico, and Honduras. More frequently, Guelmar is the forename as well as the last name.