Family name Kállai (Kallai 
, Kállai 
) , in the world, is quite a common last name. The family name Kállai is characteristic of Hungary, where it is quite a common surname, Slovakia, where it is quite a rare surname, and Qatar. In absolute terms, it is commonest in Hungary, Romania, and Ghana. Much less frequently, Kállai is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Kallai | Slovakia, Romania, Hungary, Saudi Arabia, Ghana |
| Kállai | Romania, United Kingdom, United States, Hungary |
| kállai kopis jános HU (b. 1645) |
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kállai lili dance teacher, choreographer (1900–1996), HU (b. 1900) |
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kállai gyula Hungarian politician (1910-1996), HU (b. 1910) |
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kállai ferenc Hungarian actor (1925-2010), HU (b. 1925) |
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kállai istván Hungarian writer, HU (b. 1929) |
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| kállai hermin HU (b. 1872) |
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| kállai ernő Hungarian art historian, journalist, museologist, teacher (1890-1954), HU (b. 1890) |
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kállai gábor Hungarian chess player (1959-2021), HU (b. 1959) |
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| kállai lipót association football player (1912-1989), HU (b. 1912) |
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| kállai éva Hungarian politician (1917-1957), HU (b. 1917) |
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| kállai klára (1923–1995), HU (b. 1923) |
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kállai ernő HU (b. 1969) |
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| kállai aranka anna Hungarian high school teacher, HU (b. 1933) |
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kállai zoltán Hungarian gymnast, HU (b. 1984) |
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kállai norbert football player, HU (b. 1984) |
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