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Cognomen Kā (Koo , Ká , Kā ) , around the world, is a common family name. The surname Kā is habitual in Hong Kong, where it is quite a common surname, Singapore, and Brunei (explore the name in all countries). Not in comparison with a country's population, it most frequently occurs in Malaysia, Hong Kong, and the United States. Likewise, Kā is the forename as well as the last name.