Family name জাম (Jam 
, جام 
, জাম) , across the world, is a common surname. The cognomen জাম is characteristic of Reunion, where it is quite a common surname, United Arab Emirates, and Albania. Measured by absolute frequency, it is commonest in Pakistan, India, and Indonesia. More prevalently, জাম is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Jam | Iran, Pakistan, India, Indonesia, Saudi Arabia |
| جام | Iran, Iraq, Sudan, Saudi Arabia, Algeria |