Family name Leshchynskyi (Leshchynskyi 
) , globally, is an extremely rare cognomen. The surname Leshchynskyi is characteristic of Eastern Europe, particularly Hungary, where it is a very rare surname, and Ukraine, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Leshchynskyi | Ukraine, Hungary |
| oleg leshchynskyi Ph.D. Institute of Mathematics of National Academy of Sciences of Ukraine 2001 |
|