Last name مولاي (Moulay 
, Moulaye 
, مولاي 
) , across the world, is a common cognomen. The cognomen مولاي is characteristic of Mauritania, where it is quite a common surname, Algeria, and Morocco. In absolute terms, this name is the most popular in Algeria, India, and Morocco. Also, مولاي is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Moulay | Mauritania, Senegal, India, Algeria, Morocco |
| Moulaye | Mauritania, Senegal, Mali, Algeria, Morocco |
| مولاي | Libya, Algeria, Iraq, Morocco, Egypt |
| Mulay | France, Ethiopia, India, Algeria, Morocco |