Cognomen Hajaj (Hajaj 
, חג'ג' 
) , across the world, is quite a common family name. The surname Hajaj is characteristic of Israel, where it is quite a rare surname, Morocco, and Lebanon. In absolute terms, the name is most common in Morocco, Israel, and Egypt. Very seldom, Hajaj is the forename as well as the last name.
| israel hajaj Israeli footballer, IL (b. 1950) |
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| emma hajaj researcher |
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| mohamad hajaj researcher (ORCID 0000-0001-5956-5143) |
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| claire hajaj (b. 1973) |
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