Family name Omyshev (Omyshev 
, Омишев 
) , in the world, is a very rare cognomen. The surname Omyshev is habitual in Kazakhstan, where it is a rare surname, Ukraine, where it is a very rare surname, and Russia, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Omyshev | Russia |
| Омишев | Kazakhstan, Ukraine |