Family name Regol (Rail 
, Reel 
, Regal 
) , all around the world, is a common surname. The last name Regol is habitual in Guam, where it is quite a common surname, Ireland, where it is quite a rare surname, and Portugal. Measured by absolute frequency, it is the most numerous in the United States, India, and Indonesia. Likewise, Regol is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rail | Democratic Republic of the Congo, France, Indonesia, United States, India |
| Reel | Democratic Republic of the Congo, Sudan, Indonesia, United States, India |
| Regal | Philippines, France, Indonesia, United States, India |
| Regol | Spain, France, Indonesia, Canada, India |
| sandra regol French politician, FR (b. 1978) |
|