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Surname Bilis (Bile , Bilis , 比利斯 ) , across the world, is a common family name. The surname Bilis is characteristic of Sub-Saharan Africa, particularly Somalia, where it is quite a common surname, Ivory Coast, and Djibouti. In absolute terms, it is commonest in Ivory Coast, India, and Somalia. Much less frequently, Bilis is the forename as well as the last name.