Family name אייגן (Eigen 
, אייגן 
) , across the world, is quite a rare cognomen. The last name אייגן is habitual in Germany, where it is a rare surname, Japan, and Israel. Not in comparison with a country's population, it most frequently occurs in Japan, Germany, and the United States. Much less frequently, אייגן is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Eigen | Japan, Germany, Indonesia, United States, Brazil |
| אייגן | Israel |