Last name ดูม (Dum 
, ดูม 
, Lookum 
) , in the entire world, is quite a rare cognomen. The last name ดูม is habitual in Guinea-Bissau, where it is quite a rare surname, Venezuela, and Austria. In absolute terms, it is the most numerous in India, Indonesia, and Venezuela. Likewise, ดูม is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dum | Myanmar, Venezuela, United States, India, Indonesia |
| ดูม | Thailand |
| Lookum | Nigeria |