Last name Grechykha (Grechykha 
, Гречиха 
) , all around the world, is a rare family name. The last name Grechykha is characteristic of Belarus, where it is quite a rare surname, Ukraine, where it is a rare surname, and Norway. In absolute terms, it is the most numerous in Eastern Europe, particularly Russia, Ukraine, and Belarus.
| VARIANT | COUNTRY |
|---|---|
| Grechykha | Norway |
| Гречиха | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |