Surname Doych (Doych 
, Дойч 
) , across the world, is a very rare family name. The surname Doych is characteristic of Bulgaria, where it is a rare surname, Ukraine, and Kazakhstan, where it is a very rare surname. Measured by absolute frequency, the name is most common in Eastern Europe, particularly Ukraine, Russia, and Bulgaria.
| VARIANT | COUNTRY |
|---|---|
| Doych | United States, Bulgaria |
| Дойч | Kyrgyzstan, Kazakhstan, Ukraine, Russia |