Family name روسم (روسم 
, Rossum 
) , around the globe, is quite a common last name. The last name روسم is habitual in Western Europe, particularly Netherlands, where it is quite a common surname, Belgium, where it is quite a rare surname, and Switzerland. In absolute terms, it is commonest in Netherlands, Belgium, and the United States. Much less frequently, روسم is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| روسم | Libya, Palestinian Territory, Iraq |
| Rossum | Belgium, Netherlands, Germany, United States, Switzerland |