Cognomen Bizaj (Bizaj 
) , worldwide, is a rare last name. The cognomen Bizaj is habitual in Slovenia, where it is quite a rare surname, Switzerland, where it is a rare surname, and Greece, where it is a very rare surname. Measured by absolute frequency, it most frequently occurs in Slovenia, Switzerland, and Italy. Very seldom, Bizaj is the forename as well as the last name.
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