Family name فلس (Fils 
, فلس 
, Fulus 
) , around the world, is a common cognomen. The cognomen فلس is habitual in Cameroon, where it is quite a common surname, Martinique, and Haiti. In absolute terms, it is commonest in Cameroon, the United States, and Haiti. Likewise, فلس is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fils | Cameroon, United States, Haiti, France, Democratic Republic of the Congo |
| فلس | Egypt, Sudan, Iraq |
| Fulus | Turkey, Indonesia, Saudi Arabia, Nigeria, India |
| Follis | Italy, United States, Argentina, Canada, France |