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Cognomen Ngao (Ngao , เงา , เหงา ) , in all the world, is a common last name. The family name Ngao is habitual in Tanzania, where it is quite a rare surname, Kenya, and Hong Kong. Not in comparison with a country's population, it is the most numerous in Tanzania, Kenya, and Taiwan. Much less frequently, Ngao is the forename as well as the last name.