Last name Tratar (Tratar 
) , in the entire world, is a rare family name. The family name Tratar is habitual in Slovenia, where it is quite a common surname, Switzerland, where it is a very rare surname, and Croatia. Not in comparison with a country's population, it most frequently occurs in Slovenia, the United States, and Germany. Much less frequently, Tratar is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Tratar | Germany, United States, India, Slovenia, Switzerland |
| marjan tratar AT (b. 1906) |
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marko tratar Slovenian chess player, SI (b. 1974) |
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| boštjan tratar Slovenian lawyer, SI (b. 1973) |
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| franci tratar SI (b. 1968) |
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| liljana ferbar tratar SI (b. 1969) |
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| ursa lampreht tratar researcher (ORCID 0000-0003-2905-4574) |
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| gregor tratar SI |
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| janez tratar SI |
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| urša lampreht tratar SI |
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| nataša vrčon-tratar SI |
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Mr, Edna, Eric, Hana, Igor, Zach, Žan, Marko, Matic, Sanja, Sašo, Susan, Alina, Anton, Carol, Becky, Bruce, Bryan, Kathy, Katja, Petra, Darja, Troy, David, Teri, Jure, Ms, Jo, Ty, Max, Ken, Jon, Tom, Marc, Mark, Sara, Saso, Anja, Adam, Ajda, Brig, Rick, Ruth, Gina, Luka, John, Jean, Tadd, and Diana