Family name Gerhat (Gerhat 
) , all over the world, is quite a rare cognomen. The surname Gerhat is characteristic of Slovakia, where it is quite a rare surname, Hungary, and Serbia, where it is a rare surname. Also, Gerhat is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gerhat | Serbia, Czechia, Slovakia, Indonesia, Hungary |