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 | France, Cameroon, United States, Haiti, Democratic Republic of the Congo |
| فلس | Egypt, Iraq, Sudan |
| Fulus | Saudi Arabia, India, Nigeria, Indonesia, Turkey |
| Follis | France, Argentina, Canada, United States, Italy |