Family name Shmagai (Shmagai 
, Шмагай 
) , throughout the world, is a rare cognomen. The surname Shmagai is habitual in Eastern Europe, particularly Ukraine, where it is a rare surname, and Russia, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Shmagai | Russia |
| Шмагай | Russia, Ukraine |