Cognomen 阿加 (Agar 
, Abgar 
, Agca ) , worldwide, is a common family name. The family name 阿加 is habitual in Northern Europe, particularly Estonia, where it is quite a rare surname, Ireland, and the United Kingdom. In absolute terms, it is the most numerous in Turkey, the United Kingdom, and Philippines. Likewise, 阿加 is the forename as well as the last name.