Cognomen Kluczkowski (Kluczkowski 
) , in all the world, is a rare family name. The surname Kluczkowski is habitual in Poland, where it is a rare surname, Canada, where it is a very rare surname, and Germany. Not in comparison with a country's population, this name is the most popular in Poland, Brazil, and the United States. Likewise, Kluczkowski is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kluczkowski | Germany, United States, Poland, Canada, Brazil |
| jacek kluczkowski Polish journalist, diplomat, PL (b. 1953) |
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