Family name Iltchouk (Iltchouk, Илчук 
) , across the world, is a rare cognomen. The surname Iltchouk is characteristic of Eastern Europe, particularly Russia, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Илчук | Russia |
| elena iltchouk chess player (b. 1977) |
|