Cognomen ضاهر (Daher 
, ضاهر 
, Dahr 
) , worldwide, is a common family name. The last name ضاهر is characteristic of Lebanon, where it is a common surname, Djibouti, and Palestinian Territory (explore the name in all countries). Not in comparison with a country's population, it is commonest in Western Asia, particularly Lebanon, Syria, and Palestinian Territory. Much less frequently, ضاهر is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Daher | Syria, Lebanon, Djibouti, United States, Brazil |
| ضاهر | Palestinian Territory, Syria, Egypt, Lebanon, Iraq |
| Dahr | United Arab Emirates, Syria, Lebanon, United States, Brazil |
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نزار ضاهر LB (b. 1951) |
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حسن ضاهر Lebanese footballer, LB (b. 1983) |
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علي ضاهر Lebanese footballer, LB (b. 1996) |
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| جوزيف أبي ضاهر Lebanese journalist, LB (b. 1947) |
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| إبراهيم ضاهر Lebanese politician, LB (b. 1948) |
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| عدنان ضاهر LB (b. 1941) |
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| نسيمة ضاهر Syrian actress, SY (b. 1957) |
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| ضاهر أحمد فرح Djiboutian politician, DJ (b. 1962) |
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| سلام ضاهر Lebanese civil defense worker, LB (b. 1967) |
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| مسعود ضاهر Lebanese writer, LB |
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| عبدالله محمد ضاهر Somali politician, SO |
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| إيلي ضاهر actor, LB |
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| إدوارد ضاهر LB (b. 1973) |
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| رانيا زبيب ضاهر LB |
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| حسن ضاهر EG |
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