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Family name Bilbao (Billa , Bilbao , Бильбао ) , worldwide, is a common last name. The family name Bilbao is habitual in Curacao, where it is quite a common surname, Albania, and Argentina (explore the name in all countries). In absolute terms, it most frequently occurs in India, Philippines, and Bangladesh. Much less frequently, Bilbao is the forename as well as the last name.