Cognomen Ауербах (Auerbach 
, Ауербах 
) , in the world, is quite a common last name. The cognomen Ауербах is characteristic of Marshall Islands, where it is quite a common surname, Israel, and Germany, where it is quite a rare surname. Not in comparison with a country's population, it is commonest in the United States, Germany, and Israel. Very seldom, Ауербах is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Auerbach | Germany, Austria, Hungary, United States, Israel |
| Ауербах | Russia, Ukraine |