Cognomen ז'ן (Gen 
, Jeune 
, ז'ן 
) , globally, is a common surname. The family name ז'ן is characteristic of Haiti, where it is quite a common surname, Martinique, and Jersey. In absolute terms, it is commonest in Myanmar, Haiti, and China. Also, ז'ן is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gen | France, China, Indonesia, Italy, Myanmar |
| Jeune | France, Haiti, Dominican Republic, United States, India |
| ז'ן | Israel |