Family name Bertoncelj (Bertoncelj 
) , in the entire world, is a rare last name. The surname Bertoncelj is characteristic of Slovenia, where it is quite a common surname, Croatia, where it is a rare surname, and Switzerland, where it is a very rare surname. In absolute terms, the name is most common in Slovenia, Croatia, and the United States.
| VARIANT | COUNTRY |
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| Bertoncelj | Germany, Croatia, Switzerland, Slovenia, United States |
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ivan bertoncelj Slovene military officer, SI (b. 1908) |
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dinko bertoncelj Slovene alpinist, SI (b. 1928) |
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aci bertoncelj (1939--2002) classical pianist; piano teacher, SI (b. 1939) |
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andrej bertoncelj Minister of Finance, SI (b. 1957) |
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| joža bertoncelj SI (b. 1901) |
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| jože bertoncelj Olympic alpine skier, SI (b. 1922) |
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| ivan bertoncelj SI (b. 1914) |
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| jože bertoncelj Slovene priest (1925-2016), SI (b. 1925) |
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sašo bertoncelj Slovene artistic gymnast, SI (b. 1984) |
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| marko bertoncelj SI (b. 1928) |
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| brane bertoncelj SI (b. 1948) |
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| ivan bertoncelj SI (b. 1950) |
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| jelena bertoncelj SI (b. 1968) |
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| matjaž bertoncelj SI (b. 1971) |
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| blaž bertoncelj SI (b. 1975) |
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Mr, Igor, Marko, Matej, Mojca, Metka, Milan, Sandi, Sašo, Aleš, Anže, Brane, Blaž, Petra, Peter, Darja, Domen, Laura, Lojze, Lucas, Janez, Tadej, Ivan, Tinka, Nejc, Tony, Ms, Ana, Rok, Lan, Lea, Liz, Jan, Nik, Iza, Urh, Mark, Maja, Miha, Samo, Anja, Anã, Carl, Blaz, Dean, Luka, Jani, Nace, and Nancy