Cognomen Olechnowitsch (Олехнович 
, Olechnowitsch 
) , around the world, is quite a rare family name. The surname Olechnowitsch is characteristic of Eastern Europe, particularly Belarus, where it is quite a common surname, Ukraine, where it is a rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Олехнович | Belarus, Kazakhstan, Russia, Ukraine |
| Olechnowitsch | Germany, United States |
Alachnowicz, Alechnowitsch, Alekhnovich, Aliakhnovich, Olechnovič, Olechnowicz, Olekhnovich, Olekhnovych, Алехнович, and Аляхновіч