Cognomen Kollert (Kollert 
) , throughout the world, is a rare last name. The surname Kollert is habitual in Czechia, where it is quite a rare surname, Germany, where it is a rare surname, and Sweden. Measured by absolute frequency, it is the most numerous in Germany, Czechia, and Brazil.
| VARIANT | COUNTRY |
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| Kollert | Germany, Sweden, Czechia, Brazil, United States |
| josef kollert CZ (b. 1809) |
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| julius august kollert DE (b. 1856) |
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| viktor kollert AT (b. 1887) |
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| miloš kollert CZ (b. 1924) |
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| günter kollert German writer, DE (b. 1949) |
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| jiří kollert Czech music educator and pianist, CZ (b. 1974) |
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| florian kollert researcher (ORCID 0000-0002-8172-1285) |
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| lukáš kollert |
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| ana maria cortés kollert |
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Mr, Mario, Majkl, Milan, Sussi, Andre, Anita, Aurea, Carla, Carma, Maria, Betty, Karen, Karla, Kevin, Pavel, Petra, Peter, Radek, Denis, David, Bruno, Otto, Hans, Elsa, Ms, Ana, Dan, Ivo, Mary, Mark, Chad, Carl, Kaan, Petr, Rick, Lars, Lisa, Lori, Luis, Jose, John, Joao, Jiã, Todd, Nick, Larry, and Jarah