Cognomen Laczkó (Laczko 
, Laczkó 
) , in the entire world, is quite a common last name. The last name Laczkó is characteristic of Eastern Europe, particularly Hungary, where it is quite a common surname, Slovakia, where it is quite a rare surname, and Romania. Much less frequently, Laczkó is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Laczko | Germany, Romania, Hungary, United States, Slovakia |
| Laczkó | Romania, United Kingdom, Hungary, United States, Slovakia |
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laczkó aranka actress, SK (b. 1861) |
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laczkó dezső HU (b. 1860) |
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laczkó géza Hungarian journalist, writer, translator and teacher (1884-1953), HU (b. 1884) |
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laczkó istván Hungarian football player (b. 1924), HU (b. 1924) |
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laczkó istván football player (b. 1948), HU (b. 1948) |
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| laczkó mária Hungarian opera singer, HU (b. 1914) |
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róbert laczkó vass Romanian actor, RO (b. 1976) |
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laczkó levente gymnast, HU |
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| laczkó mihály Hungarian chemical engineer and sports administrator (1935-2020), HU (b. 1935) |
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laczkó zsolt Hungarian association football player, HU (b. 1986) |
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| laczkó mihály association football player (b. 1939), HU (b. 1939) |
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| laczkó mihály football player (b. 1940), HU (b. 1940) |
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| laczkó andrás HU (b. 1943) |
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| laczkó józsef Hungarian mathematician, biomechanist, HU (b. 1957) |
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| laczkó józsef Hungarian mathematics teacher from Transylvania (1957-2014), RO (b. 1957) |
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