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Last name Deych (Deych
, Дейч
, Деич
) , around the globe, is a rare family name. The surname Deych is habitual in Latvia, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Belarus. Measured by absolute frequency, it is commonest in Russia, Kazakhstan, and Ukraine. Likewise, Deych is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Deych | Russia, Latvia, United States, Democratic Republic of the Congo, Germany |
| Дейч | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Деич | Russia, Ukraine |
| Деыч | Russia |