Surname Illyass (Illyass 
) , in the world, is a very rare last name. The cognomen Illyass is characteristic of Morocco, where it is a rare surname, Pakistan, where it is a very rare surname, and India, where it is an extremely rare surname. Also, Illyass is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Illyass | Morocco, Pakistan, United States, India, Nigeria |