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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 | United States, Russia, Democratic Republic of the Congo, Germany, Latvia |
| Дейч | Ukraine, Kazakhstan, Russia, Belarus, Kyrgyzstan |
| Деич | Ukraine, Russia |
| Деыч | Russia |