Family name Łaszczyński (Łaszczyński 
, Лащинский 
) , worldwide, is a rare cognomen. The last name Łaszczyński is habitual in Eastern Europe, particularly Poland, where it is a very rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Łaszczyński | Poland |
| Лащинский | Russia |
|
jakub ignacy łaszczyński Polish politician (1791-1865), PL (b. 1791) |
|
|
bolesław łaszczyński painter (1842-1909), PL (b. 1842) |
|
| witold łaszczyński PL (b. 1872) |
|