Cognomen Rostoum (Rostoum 
) , around the globe, is a very rare family name. The last name Rostoum is characteristic of Morocco, where it is a rare surname, France, where it is an extremely rare surname, and the United States. Likewise, Rostoum is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rostoum | Morocco, Algeria, United States, India, France |