Last name جنا (جنا 
, Genna 
, Jna 
) , worldwide, is a common surname. The surname جنا is habitual in Egypt, where it is quite a common surname, Jamaica, and Malaysia. Not in comparison with a country's population, it is commonest in Egypt, Malaysia, and Italy. Likewise, جنا is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| جنا | Saudi Arabia, Syria, Sudan, Egypt, Iraq |
| Genna | Japan, Italy, Malaysia, Philippines, United States |
| Jna | Egypt, Malaysia, Philippines, United States, India |