Surname Lashchevskii (Lashchevskii 
, Лащевский 
) , in all the world, is a rare cognomen. The cognomen Lashchevskii is characteristic of Belarus, where it is quite a rare surname, Russia, where it is a very rare surname, and Kazakhstan.
| VARIANT | COUNTRY |
|---|---|
| Lashchevskii | Russia |
| Лащевский | Kazakhstan, Russia, Ukraine, Belarus |
Лашчевский, and Лащевський