Surname Илла (Illa 
, Илла 
) , all around the world, is a common last name. The family name Илла is characteristic of Aland Islands, where it is quite a common surname, Libya, where it is quite a rare surname, and Peru. Measured by absolute frequency, this name is the most popular in India, Peru, and Indonesia. Very seldom, Илла is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Illa | Spain, Indonesia, United States, Peru, India |
| Илла | Kyrgyzstan, Kazakhstan, Russia, Belarus |