Around the globe, Istref (Istref 
) is a very rare masculine forename. The forename Istref is characteristic of Southern Europe, particularly Albania, where it is quite a rare boy's name, and Greece, where it is a rare masculine name. Also, Istref is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Istref | Albania, Greece, North Macedonia, Italy, United States |
| istref begolli Yugoslav actor, XK (b. 1933) |
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| istref haxhillari AL |
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