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Cognomen Jais (Jais ) , worldwide, is a common family name. The family name Jais is characteristic of South-eastern Asia, particularly Malaysia, where it is quite a common surname, Brunei, and Singapore, where it is quite a rare surname. Not in comparison with a country's population, it most frequently occurs in Malaysia, Indonesia, and India. Likewise, Jais is the forename as well as the last name.