Family name Illka (Illka 
) , throughout the world, is an extremely rare cognomen. The cognomen Illka is characteristic of Latin America and the Caribbean, particularly Nicaragua, where it is a very rare surname, and Venezuela, where it is an extremely rare surname. More prevalently, Illka is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Illka | Brazil, Nicaragua, Singapore, South Africa, United States |