Surname Герлин (Guerline 
, Gerlyn 
, Gerlin ) , in the world, is quite a rare last name. The last name Герлин is characteristic of Latin America and the Caribbean, particularly Honduras, where it is quite a rare surname, Haiti, and Nicaragua. Measured by absolute frequency, it is the most numerous in Honduras, Haiti, and Italy. More prevalently, Герлин is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Guerline | Democratic Republic of the Congo, Brazil, Haiti, United States, Dominican Republic |
| Gerlyn | Honduras, United States, Dominican Republic, Guatemala, Philippines |
| Gerlin | Honduras, Democratic Republic of the Congo, United States, Dominican Republic, Philippines |
| Герлин | Kazakhstan, Ukraine, Russia |