Family name Zernis (Zernis 
, Зернис 
) , around the globe, is a very rare last name. The cognomen Zernis is habitual in Latvia, where it is a rare surname, Kazakhstan, where it is a very rare surname, and Russia, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in Latvia, the United States, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Zernis | United States, Latvia |
| Зернис | Kazakhstan, Russia |