Last name Kluczniok (Kluczniok 
) , all around the world, is a rare family name. The family name Kluczniok is characteristic of Poland, where it is a rare surname, and Germany, where it is a very rare surname. More prevalently, Kluczniok is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kluczniok | Germany, Poland |
| alojzy kluczniok PL (b. 1914) |
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| eugeniusz kluczniok Polish filmmaker, PL (b. 1951) |
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| krzysztof kluczniok PL (b. 1950) |
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| dorothea kluczniok German psychologist, DE |
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| katharina kluczniok DE (b. 1981) |
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