Cognomen Brlek (Brlek 
) , around the world, is quite a rare family name. The cognomen Brlek is habitual in Croatia, where it is quite a common surname, Slovenia, where it is quite a rare surname, and Canada, where it is a very rare surname. Measured by absolute frequency, the name is most common in Croatia, Slovenia, and Germany.
| VARIANT | COUNTRY |
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| Brlek | Germany, Canada, United States, Slovenia, Croatia |
| ivan brlek SI (b. 1911) |
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| franc brlek SI (b. 1926) |
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| caecilianus brlek (b. 1927) |
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| aljaž brlek researcher |
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| srečko brlek Doctorat Université Bordeaux 1 1988 |
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| srečko brlek Canadian mathematician, CA |
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| aljaž brlek SI |
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| sašo slaček brlek SI (b. 1983) |
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| petar brlek Croatian footballer, HR (b. 1994) |
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| ksenija trotovšek brlek Slovene cellist, SI |
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Mr, Nada, Nela, Vera, Ivan, Ivka, Igor, Mario, Marta, Marco, Luka, Marko, Mican, Sandi, Sanja, Senka, Sonja, Aljaz, Antun, Anita, Bojan, Milan, Leon, Lara, Lana, Ms, Ana, Rok, Rea, Leo, Lea, Tea, Eva, Iva, Maya, Maja, Mira, Miro, Sven, Alen, Alma, Anja, Anka, Roko, Dino, Dora, Božo, and Blaå