Cognomen Illiyas (Illiyas 
) , across the world, is quite a rare family name. The family name Illiyas is habitual in Sri Lanka, where it is quite a rare surname, United Arab Emirates, and Qatar, where it is a rare surname. In absolute terms, this name is the most popular in Southern Asia, particularly Sri Lanka, India, and Bangladesh. Likewise, Illiyas is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Illiyas | Saudi Arabia, Bangladesh, Pakistan, India, Sri Lanka |