Family name Ruchniewicz (Ruchniewicz 
) , all around the world, is a rare cognomen. The last name Ruchniewicz is characteristic of Poland, where it is a rare surname, Germany, where it is a very rare surname, and the United Kingdom. Likewise, Ruchniewicz is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ruchniewicz | United States, United Kingdom, Poland, Germany |
| ludwik ruchniewicz (b. 1752) |
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| józef ruchniewicz (b. 1862) |
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| alojzy ruchniewicz PL (b. 1867) |
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krzysztof ruchniewicz Polish historian, PL (b. 1967) |
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| małgorzata ruchniewicz Polish historian, PL (b. 1970) |
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