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