Cognomen Laczó (Laczó 
) , all around the world, is a very rare surname. The cognomen Laczó is habitual in Eastern Europe, particularly Hungary, where it is a rare surname. Much less frequently, Laczó is the forename as well as the last name.
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| Laczó | Hungary |
| laczó istván (1904--1965) opera singer, HU (b. 1904) |
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| laczó zoltán Hungarian music teacher, music psychologist, HU (b. 1938) |
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| ildikó laczó opera singer (b. 1945) |
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| gusztáv laczó (b. 1936) |
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| laczó zoltán vince Hungarian composer, HU (b. 1964) |
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| andrás laczó (b. 1954) |
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| jan laczó researcher |
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| józsef laczó Hungarian entomologist |
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| bence laczó researcher |
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| júlia laczó (b. 1971) |
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| laczó ferenc Hungarian historian, HU (b. 1982) |
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Jan, Ferenc, Szabina, Adrienn, Balázs, Boglárka, Bálint, Tamás, Dániel, Levente, Norbert, Zoltán, Szabolcs, Georgina, Erzsébet, György, Lilien, Gábor, Daniel, Eva, Pál, Gina, Lili, Niki, Inez, Éva, Petra, Laura, Tibor, Nóra, Ilona, Zsolt, Anikó, Péter, Krisztina, and Zsuzsanna