Family name Aliaj (Aliaj 
) , all around the world, is quite a common cognomen. The cognomen Aliaj is characteristic of Albania, where it is a common surname, Kosovo, where it is quite a common surname, and Greece, where it is quite a rare surname. In absolute terms, it most frequently occurs in Southern Europe, particularly Albania, Greece, and Italy. Very seldom, Aliaj is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Aliaj | Albania, Greece, Kosovo, Italy, Serbia |
| justina aliaj actor, AL (b. 1951) |
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| besnik aliaj AL (b. 1966) |
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| adrian aliaj Albanian footballer, AL (b. 1976) |
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| klevis aliaj researcher |
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| ilirjan aliaj Albanian physicist, AL |
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| arber aliaj Belgian performing artist, BE |
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| tasim aliaj AL |
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| ulpiana aliaj |
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| shemsi aliaj |
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| hysland aliaj Albanian football player, AL (b. 1991) |
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| boralda aliaj Albanian association football player, AL (b. 1995) |
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| kevin aliaj Albanian footballer (b. 1999) |
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| toni aliaj Croatian footballer, BE (b. 1999) |
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