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Cognomen Nkosi (Nkosi , Нкосі , نكوسي) , in the entire world, is a widespread surname. The cognomen Nkosi is habitual in Sub-Saharan Africa, particularly South Africa, where it is a common surname, Eswatini, where it is quite a common surname, and Botswana, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in Sub-Saharan Africa, particularly South Africa, Angola, and Malawi. Much less frequently, Nkosi is the forename as well as the last name.