Last name Mustum (Mos 
, Most 
, Moutarde 
) , around the globe, is a common cognomen. The last name Mustum is characteristic of Botswana, where it is quite a common surname, Netherlands, and Algeria, where it is quite a rare surname. Not in comparison with a country's population, this name is the most popular in Algeria, Egypt, and Netherlands. Likewise, Mustum is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mos | Germany, Egypt, Algeria, Poland, India |
| Most | Morocco, Germany, Egypt, Algeria, India |
| Moutarde | Netherlands, Germany, France, United Kingdom, United States |
| Mustum | Australia, France, India, United States |