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Throughout the world, Melby (Melby ) is a rare largely female, but infrequently male given name. The forename Melby is habitual in Latin America and the Caribbean, particularly Bolivia, where it is quite a rare feminine name, El Salvador, and Nicaragua, where it is a rare unisex name. Measured by absolute frequency, the name is most common in Bolivia, Mexico, and Philippines. More prevalently, Melby is the last name as well as the forename.