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 | Palestinian Territory, Libya, Iraq |
| Rossum | Germany, Belgium, Switzerland, United States, Netherlands |