Last name Kalthum (Kalthum 
) , in the world, is a rare family name. The cognomen Kalthum is habitual in Malaysia, where it is a rare surname, and Nigeria, where it is a very rare surname. Also, Kalthum is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kalthum | United Arab Emirates, Malaysia, Philippines, Nigeria, Iraq |
| umi kalthum Malaysian actress (1932-2013), MY (b. 1932) |
|