Cognomen Guerich (Guerich 
, Гериш 
) , in the world, is a rare surname. The cognomen Guerich is characteristic of Ukraine, where it is a rare surname, Belarus, and Morocco. Measured by absolute frequency, the name is most common in Ukraine, Russia, and Morocco. Very seldom, Guerich is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Guerich | Germany, Morocco, Italy, United States, Democratic Republic of the Congo |
| Гериш | Ukraine, Belarus, Russia |
| karl guerich |
|