Family name Dreiyer (Dreiyer 
, Дреиер 
) , worldwide, is a very rare cognomen. The last name Dreiyer is habitual in Russia, where it is a very rare surname, Germany, where it is an extremely rare surname, and Brazil.
| VARIANT | COUNTRY |
|---|---|
| Dreiyer | Germany, Brazil |
| Дреиер | Russia |