Last name Kolosovskaya (Колосовская 
, Kolosovskaya 
) , all around the world, is quite a rare family name. The family name Kolosovskaya is characteristic of Belarus, where it is quite a rare surname, Russia, and Kazakhstan, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Колосовская | Kazakhstan, Belarus, Kyrgyzstan, Russia, Ukraine |
| Kolosovskaya | Israel, Belarus, United States, Russia, Ukraine |
| zinaida kolosovskaya Belarusian Righteous Among the Nations, BY (b. 1925) |
|