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Family name Hajjar (Hajjar , حجار , Хайяр ) , throughout the world, is a common last name. The surname Hajjar is characteristic of Western Asia, particularly Lebanon, where it is a common surname, Syria, where it is quite a common surname, and United Arab Emirates. Measured by absolute frequency, it is commonest in Western Asia, particularly Lebanon, Syria, and Saudi Arabia. Very seldom, Hajjar is the forename as well as the last name.