Surname Krzeczkowski (Krzeczkowski 
) , around the globe, is a rare last name. The cognomen Krzeczkowski is habitual in Poland, where it is a rare surname, Israel, where it is a very rare surname, and Argentina. Measured by absolute frequency, it is the most numerous in Poland, the United States, and Argentina. Likewise, Krzeczkowski is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Krzeczkowski | Germany, United Kingdom, United States, Poland, Argentina |
| józef krzeczkowski (b. 1809) |
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| konstanty krzeczkowski Polish social scientist (1879-1939), PL (b. 1879) |
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szymon krzeczkowski Polish philantropist, PL |
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| henryk krzeczkowski PL (b. 1921) |
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| jan krzeczkowski PL (b. 1935) |
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| john e krzeczkowski researcher |
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