Family name Ouelhadj (Ouelhadj 
) , all around the world, is a rare last name. The surname Ouelhadj is habitual in Algeria, where it is a rare surname, France, and Morocco. Much less frequently, Ouelhadj is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ouelhadj | Belgium, Morocco, Algeria, United States, France |
| djamila ouelhadj researcher (ORCID 0000-0001-9866-1402) |
|
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| imane ouelhadj |
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