Surname المستعين (المستعين 
) , globally, is a very rare cognomen. The last name المستعين is habitual in Northern Africa, particularly Morocco, where it is a rare surname. Much more prevalently, المستعين is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| المستعين | Sudan, Algeria, Egypt, Morocco, Iraq |
Al-Mustain, Mustain, and Аль-Аббас