Family name Auchynnikau (Auchynnikau 
) , around the globe, is a very rare surname. The cognomen Auchynnikau is habitual in Belarus, where it is a rare surname, Lithuania, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Auchynnikau | Lithuania, United States, Belarus |
Ivan, Andrei, Yauheni, Aliaksei, and Aliaksandr