Cognomen Ilays (Ilays 
) , in all the world, is a rare last name. The family name Ilays is habitual in Pakistan, where it is a rare surname, Saudi Arabia, and Morocco. In absolute terms, the name is most common in Pakistan, Indonesia, and Saudi Arabia. Also, Ilays is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ilays | Morocco, Somalia, Pakistan, Indonesia, Algeria |