Cognomen Тертышниы (Тертышниы 
) , in all the world, is an extremely rare family name. The last name Тертышниы is characteristic of Eastern Europe, particularly Russia, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Тертышниы | Russia |
Tertychniy, Tertyshniy, and Tertyshnyy