Family name Siyahi (Siyahi 
) , in the world, is a rare cognomen. The surname Siyahi is habitual in Algeria, where it is a rare surname, Morocco, and Tanzania, where it is a very rare surname. Also, Siyahi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Siyahi | Iran, Morocco, Algeria, Tanzania, India |