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 | Egypt, India, Poland, Algeria, Germany |
| Most | Germany, Egypt, India, Algeria, Morocco |
| Moutarde | Netherlands, France, United States, United Kingdom, Germany |
| Mustum | Australia, United States, India, France |