Cognomen جستن (جستن 
, Jstn 
) , across the world, is a rare last name. The cognomen جستن is habitual in Sudan, where it is a rare surname, Iraq, where it is a very rare surname, and France. More frequently, جستن is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| جستن | Egypt, Sudan, Iraq |
| Jstn | France |