Family name Eisik (Eisik 
) , in all the world, is a very rare cognomen. The cognomen Eisik is habitual in Argentina, where it is a very rare surname, Israel, and Mexico, where it is an extremely rare surname. Also, Eisik is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Eisik | Israel, United States, Mexico, Argentina |