Last name Рудніцкі (Рудніцкі, Rudnitski 
) , in the world, is a rare cognomen. The surname Рудніцкі is habitual in Estonia, where it is quite a rare surname, Bulgaria, where it is a rare surname, and Canada, where it is a very rare surname. In absolute terms, it most frequently occurs in the United States, Estonia, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Rudnitski | Brazil, Estonia, Bulgaria, Canada, United States |
Rudnick, Rudnicki, Рудницкий, and Рудницький
| валерый аркадзевіч рудніцкі Belarusian physicist, BY (b. 1941) |
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| віталь рудніцкі Belarusian gymnast, BY (b. 1974) |
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| дзмітрый рудніцкі BY |
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