Last name Jahnam (Jahnam 
) , in the world, is a rare surname. The cognomen Jahnam is habitual in Malaysia, where it is a rare surname, Indonesia, where it is a very rare surname, and India, where it is an extremely rare surname. Much less frequently, Jahnam is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jahnam | India, Indonesia, Malaysia |