Family name Sïhäm (Sïhäm 
) , all around the world, is a very rare cognomen. The last name Sïhäm is habitual in Northern Africa, particularly Morocco, where it is a very rare surname. More prevalently, Sïhäm is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sïhäm | Algeria, Morocco |