Cognomen Erdős (Erdos 
, Erdős 
) , all around the world, is quite a common surname. The cognomen Erdős is habitual in Eastern Europe, particularly Hungary, where it is quite a common surname, Romania, where it is quite a rare surname, and Slovakia. Not in comparison with a country's population, it is the most numerous in Hungary, the United States, and Romania. Much less frequently, Erdős is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Erdos | Hungary, United States, Slovakia, Romania, Indonesia |
| Erdős | United Kingdom, Hungary, United States, Romania, Germany |
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erdős renée writer, HU (b. 1878) |
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erdős richárd Hungarian operatic bass, HU (b. 1881) |
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| erdős aurél gergely HU (b. 1830) |
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| erdős józsef Hungarian reformed pastor (1856-1946), HU (b. 1856) |
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erdős pál Hungarian mathematician (1913–1996), HU (b. 1913) |
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tibor cs. erdős Romanian painter (1914-2015), RO (b. 1914) |
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| erdős armand HU (b. 1872) |
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| erdős lajos HU (b. 1879) |
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erdős mihály Hungarian aviator, HU (b. 1939) |
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| erdős józsef entomologist, HU (b. 1900) |
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| erdős péter Hungarian economist, HU (b. 1910) |
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| erdős géza Hungarian painter (1910-1964), HU (b. 1910) |
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| györgy erdős RO (b. 1901) |
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| erdős jenő (1912--1981) journalist; sociographist, HU (b. 1912) |
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| erdős ilona Hungarian actress, HU (b. 1913) |
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Dia, Kitti, Petra, Peter, Ricsi, Réka, Dóri, Dóra, Géza, Gyula, Laura, Lajos, Lilla, Jenő, Judit, Timea, Tibor, Nóra, Edina, Erika, Erzsi, Emese, Kinga, Béla, Betty, Bence, Anna, Bogi, Kata, Kira, Paul, Pál, Rita, Laci, Lili, Edit, Viola, Erik, Imre, Orsi, Ági, Éva, Antal, Anita, Anett, Adél, Csaba, Csabi, Emil, and Fanni