Family name Leszczuk (Leszczuk 
, Лещук 
) , all over the world, is quite a common cognomen. The surname Leszczuk is characteristic of Eastern Europe, particularly Ukraine, where it is quite a rare surname, Belarus, and Poland. In absolute terms, it is the most numerous in Eastern Europe, particularly Ukraine, Russia, and Poland. Much less frequently, Leszczuk is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Leszczuk | Argentina, United Kingdom, United States, Germany, Poland |
| Лещук | Azerbaijan, Kazakhstan, Belarus, Russia, Ukraine |
| bronisława leszczuk Polish Righteous Among the Nations, PL (b. 1919) |
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| mikołaj leszczuk researcher |
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| agata leszczuk researcher, PL |
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| iván leszczuk Argentinian association football player, AR (b. 1996) |
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