Cognomen Еркул (Еркул 
) , throughout the world, is an extremely rare surname. The surname Еркул is habitual in Eastern Europe, particularly Ukraine, where it is an extremely rare surname, and Russia. Much more frequently, Еркул is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Еркул | Azerbaijan, Uzbekistan, Kazakhstan, Russia, Ukraine |