Cognomen 哈加 (Hagar 
, 哈加 
) , around the world, is a common surname. The family name 哈加 is habitual in Israel, where it is quite a common surname, Egypt, where it is quite a rare surname, and Ghana. Measured by absolute frequency, it is commonest in Egypt, the United States, and Israel. More frequently, 哈加 is the forename as well as the last name.