Family name อรอุม (Arhum 
, อรอุม 
) , in the world, is a rare surname. The cognomen อรอุม is habitual in Saudi Arabia, where it is a very rare surname, Pakistan, and Indonesia. More frequently, อรอุม is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Arhum | Indonesia, Saudi Arabia, United States, India, Pakistan |
| อรอุม | Thailand |