Last name Lilleorg (Lilleorg 
) , in all the world, is a rare cognomen. The surname Lilleorg is characteristic of Northern Europe, particularly Estonia, where it is quite a common surname, Latvia, where it is a rare surname, and Finland.
| VARIANT | COUNTRY |
|---|---|
| Lilleorg | Estonia, Latvia, Canada, United States, Finland |
| ilmar lilleorg Estonian philosopher, EE (b. 1934) |
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| tiit lilleorg Estonian actor (1941-2021), EE (b. 1941) |
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