Last name Gregorek (Gregorek 
) , globally, is quite a rare surname. The family name Gregorek is habitual in Poland, where it is quite a rare surname, Croatia, and Slovenia, where it is a rare surname. In absolute terms, this name is the most popular in Poland, the United States, and Germany. Likewise, Gregorek is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gregorek | Germany, Croatia, United States, Czechia, Poland |
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karol gregorek Polish footballer, PL (b. 1983) |
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| bolesław gregorek PL (b. 1927) |
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| jiří gregorek CZ (b. 1929) |
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| karin gregorek German actress, DE (b. 1941) |
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john gregorek American middle-distance runner (born 1991), US (b. 1991) |
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| john gregorek Olympic athlete (born 1960), US (b. 1960) |
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| jan gregorek CZ (b. 1985) |
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