Family name ريول (Reul 
, ريول 
) , all over the world, is quite a rare last name. The cognomen ريول is habitual in Belgium, where it is quite a rare surname, Moldova, and Germany. Measured by absolute frequency, it is the most numerous in Germany, Belgium, and the United States. Much less frequently, ريول is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Reul | Mexico, Belgium, United States, Germany, Moldova |
| ريول | Iraq |