Last name Джахани (Jahani 
, Джахани 
) , globally, is quite a rare family name. The cognomen Джахани is habitual in Iran, where it is quite a rare surname, Afghanistan, and Malaysia, where it is a rare surname. Also, Джахани is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jahani | Indonesia, Iran, Malaysia, Afghanistan, India |
| Джахани | Kazakhstan, Russia |