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Cognomen Acs (Acs , 阿奇 , Ács ) , in the world, is a common surname. The family name Acs is habitual in Hungary, where it is quite a common surname, Slovakia, where it is quite a rare surname, and Malta. In absolute terms, it is commonest in Hungary, Myanmar, and Indonesia. Much less frequently, Acs is the forename as well as the last name.