Family name روستان (Rostand 
, Rostan 
, روستان 
) , throughout the world, is quite a common cognomen. The last name روستان is characteristic of Cameroon, where it is quite a common surname, Uruguay, where it is quite a rare surname, and France. Not in comparison with a country's population, this name is the most popular in Cameroon, France, and Argentina. More frequently, روستان is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rostand | France, Argentina, Cameroon, Gabon, Democratic Republic of the Congo |
| Rostan | France, Argentina, Cameroon, India, Democratic Republic of the Congo |
| روستان | Iran |