Surname Leszczyński (Leszczynski 
, Leszczyński 
, Лещинский 
) , around the world, is a common cognomen. The cognomen Leszczyński is characteristic of Poland, where it is quite a common surname, Belarus, and Israel, where it is quite a rare surname. In absolute terms, it is commonest in Eastern Europe, particularly Poland, Russia, and Belarus. Also, Leszczyński is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Leszczynski | United States, Germany, Poland, France, Israel |
| Leszczyński | United Kingdom, United States, Germany, Poland, France |
| Лещинский | Kyrgyzstan, Kazakhstan, Belarus, Ukraine, Russia |
Лещинський, and Ляшчынскі
| rafał leszczyński Roman Catholic bishop, PL (b. 1480) |
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| rafał leszczyński Polish noble, PL (b. 1526) |
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wacław leszczyński PL (b. 1576) |
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wacław leszczyński Polish archbishop, PL (b. 1605) |
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andrzej leszczyński Roman Catholic archbishop, PL (b. 1608) |
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| andrzej leszczyński Polish–Lithuanian Commonwealth politician, PL (b. 1559) |
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bogusław leszczyński 17th-century Polish nobleman, PL (b. 1612) |
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jan leszczyński (b. 1603) |
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| rafał leszczyński Polish-Lithuanian noble and Imperial count, UA (b. 1579) |
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| izydor leszczyński Polish painter (1584-1645), PL (b. 1584) |
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bogusław leszczyński Roman Catholic bishop, PL (b. 1645) |
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| andrzej leszczyński Polish noble, SE (b. 1606) |
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| przecław leszczyński PL (b. 1605) |
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| władysław leszczyński Polish clergyman and composer, PL (b. 1616) |
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| rafał leszczyński (b. 1607) |
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Jan, Jacek, Jarek, Jakub, Jerzy, Jurek, Tomek, Filip, Oskar, Marcel, Marcin, Maciej, Maciek, Michal, Stefan, Szymon, Antoni, Adrian, Cezary, Czarek, Bartek, Bogdan, Janek, Laura, Dawid, Darek, Ewa, Iwo, Arek, Adam, Kuba, Lech, Eryk, Emil, Igor, Mario, Brajan, Marek, Artur, Adaś, Brian, Karol, Kamil, Paweł, Piotr, Radek, Rafał, Roman, Mirek, and Kacper