Cognomen Rousseil (Rousseil 
) , around the globe, is a rare family name. The surname Rousseil is habitual in France, where it is a rare surname, Switzerland, where it is a very rare surname, and Spain. Much less frequently, Rousseil is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rousseil | Switzerland, United States, Spain, France |
|
rosélia rousseil (b. 1840) |
|
| justí rousseil FR (b. 1854) |
|