Last name Fronczyk (Fronczyk 
) , globally, is a rare family name. The cognomen Fronczyk is characteristic of Poland, where it is a rare surname, Germany, where it is a very rare surname, and Australia. Measured by absolute frequency, it is the most numerous in Poland, Germany, and the United States. More prevalently, Fronczyk is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fronczyk | Germany, United Kingdom, Australia, United States, Poland |
| franciszek fronczyk PL (b. 1912) |
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| joanna fronczyk researcher |
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| kassandra fronczyk Ph.D. University of California, Santa Cruz 2011 (b. 1985) |
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| erica fronczyk |
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