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Around the globe, Caldas (Caldas , Калдаш ) is a rare gender-neutral first name. The given name Caldas is characteristic of Kazakhstan, where it is a rare unisex name, Portugal, where it is a rare male name, and South Africa, where it is a very rare gender-neutral name. Not in comparison with a country's population, it most frequently occurs in Kazakhstan, China, and South Africa. Much more frequently, Caldas is the last name as well as the forename.