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Throughout the world, Nelsy (Nelsy ) is quite a common principally female, but very seldom masculine given name. The forename Nelsy is characteristic of Latin America and the Caribbean, particularly Costa Rica, where it is quite a rare female name, the Dominican Republic, and Colombia. In absolute terms, the name is most common in Mexico, Colombia, and the Democratic Republic of the Congo. Much less frequently, Nelsy is the last name as well as the forename.