Last name Fainguerch (Fainguerch 
, Файнгерш 
) , in the world, is a rare family name. The surname Fainguerch is habitual in Russia, where it is a very rare surname, Ukraine, and Argentina, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Fainguerch | Argentina |
| Файнгерш | Russia, Ukraine |