Cognomen Klucki (Klucki 
) , in all the world, is a very rare surname. The cognomen Klucki is habitual in Southern Europe, particularly Croatia, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Klucki | Croatia |
|
ludwik klucki CZ (b. 1801) |
|
| stanisław klucki PL (b. 1827) |
|
|
| sobieslaus klucki PL (b. 1835) |
|