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Cognomen Aoun (عون , Aoun , Аун ) , in all the world, is a common last name. The family name Aoun is characteristic of Lebanon, where it is a common surname, Libya, where it is quite a common surname, and U.S. Virgin Islands (explore the name in all countries). Measured by absolute frequency, this name is the most popular in Lebanon, Egypt, and Libya. Likewise, Aoun is the forename as well as the last name.