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Last name Chio (昭 , Chio , จิ่ว) , all around the world, is a common cognomen. The family name Chio is characteristic of Macao, where it is a widespread surname, Mozambique, where it is quite a rare surname, and Singapore. Not in comparison with a country's population, it most frequently occurs in China, Macao, and Mozambique. More prevalently, Chio is the forename as well as the last name.