Surname Эйнис (Einis 
, Эйнис 
) , in the world, is a very rare last name. The cognomen Эйнис is characteristic of Kazakhstan, where it is a very rare surname, Venezuela, and Argentina. Not in comparison with a country's population, it is the most numerous in the United States, Argentina, and Venezuela. Also, Эйнис is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Einis | Colombia, United States, Argentina, Brazil, Venezuela |
| Эйнис | Kazakhstan, Russia |
| владимир львович эйнис Soviet physician, RU (b. 1890) |
|