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Family name Chaia (ไชยา , Chaia , Шая ) , worldwide, is quite a rare cognomen. The family name Chaia is habitual in Thailand, where it is quite a rare surname, Peru, where it is a rare surname, and Uruguay. Not in comparison with a country's population, it most frequently occurs in Thailand, Brazil, and Peru. More frequently, Chaia is the forename as well as the last name.