Family name Flajs (Flajs 
) , worldwide, is a rare surname. The last name Flajs is habitual in Southern Europe, particularly Slovenia, where it is quite a rare surname, Serbia, where it is a rare surname, and Croatia. Measured by absolute frequency, the name is most common in Slovenia, Serbia, and Austria.
| VARIANT | COUNTRY |
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| Flajs | Serbia, Austria, Croatia, Slovenia, Germany |
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gerd flajs Austrian paleontologist, AT (b. 1942) |
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| vesna cerkvenik flajs SI (b. 1962) |
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| srđan flajs Serbian basketball coach, RS (b. 1975) |
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| andrej flajs Slovene volleyball player, SI (b. 1983) |
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| andrej flajs SI |
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Mr, Ivana, Oscar, Mateja, Miško, Slavko, Andrej, Angela, Arnold, Karmen, Daniel, Gregor, Gizela, Jernej, Harald, Flavio, Maruša, Michael, Andraž, Kenneth, Primož, Rudolph, Vojka, Danyeil, Vojta, Julia, Ana, Amy, Ken, Miha, Sara, Adam, Rudi, Igor, Mario, Matic, Matej, Megan, Carol, Borut, Brian, Peter, Roman, Janet, Janez, Jacob, Josip, Nives, and Dražen