Family name Gregl (Gregl 
) , globally, is a rare cognomen. The last name Gregl is habitual in Southern Europe, particularly Montenegro, where it is quite a rare surname, Slovenia, and Croatia.
| VARIANT | COUNTRY |
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| Gregl | Brazil, Montenegro, Germany, Slovenia, Croatia |
| franjo gregl Slovene cyclist, SI (b. 1891) |
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| dominik gregl SI (b. 1934) |
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| maja gregl actor (b. 1957) |
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| zoran gregl HR (b. 1952) |
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| maja gregl (b. 1957) |
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| tomislav gregl |
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| ernest gregl |
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Mr, Žiga, Marija, Sandra, Albert, Andrea, Branko, Jelena, Hrvoje, Viljem, Vivien, Vedran, Zlatka, Marjana, Mirjana, Michael, Barbara, Danijel, Dalibor, Dominik, Erosita, Marijana, Willi, Ivana, Filip, Vesna, Ana, Gea, Iva, Maja, Mira, Sara, Anja, Bono, Roko, Toni, Miljenko, Nina, Anže, Boris, Bruno, Karla, Petra, Darko, Davor, Dusan, Goran, Jasna, Matej, and Miroslav