In the world, Герлин (Guerline 
, Gerlyn 
, Gerlin ) is a common mostly female, but uncommonly boy's forename. The forename Герлин is habitual in the Democratic Republic of the Congo, where it is quite a rare epicene name, the Dominican Republic, and Philippines, where it is quite a rare female name. Much less frequently, Герлин is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Guerline | Democratic Republic of the Congo, Haiti, Dominican Republic, United States, Brazil |
| Gerlyn | Philippines, Dominican Republic, Guatemala, United States, Honduras |
| Gerlin | Democratic Republic of the Congo, Philippines, Dominican Republic, United States, Honduras |
| Герлин | Kazakhstan, Russia, Ukraine |