Family name Vahdat-Hagh (Vahdat-Hagh 
) , worldwide, is an extremely rare last name. The last name Vahdat-Hagh is habitual in Northern Europe, particularly the United Kingdom, where it is an extremely rare surname. Parts of the name also exists independently as a last name Vahdat, and a last name Hagh.
| VARIANT | COUNTRY |
|---|---|
| Vahdat-Hagh | United Kingdom |