Cognomen حجار (Hajjar 
, حجار 
, Hjar 
) , in the entire world, is a common family name. The family name حجار is habitual in Western Asia, particularly Lebanon, where it is a common surname, Syria, where it is quite a common surname, and United Arab Emirates. In absolute terms, it is the most numerous in Western Asia, particularly Lebanon, Syria, and Saudi Arabia. Much less frequently, حجار is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Hajjar | Morocco, United Arab Emirates, Syria, Lebanon, Saudi Arabia |
| حجار | Iran, Jordan, Sudan, Syria, Algeria |
| Hjar | Morocco, Tunisia, Syria, Malaysia, Saudi Arabia |
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بندر بن محمد بن حمزة حجار Saudi Arabian politician, SA (b. 1953) |
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| نديم حجار Lebanese male tennis player, LB (b. 1926) |
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میترا حجار Iranian actress, IR (b. 1977) |
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| مايا حجار Lebanese female tennis player, LB (b. 1964) |
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| بسام حجار LB (b. 1955) |
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| هناء حجار cartoonist, SA |
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| حجار جورج Canadian of Arab descent, writer, teacher and political activist, LB |
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