Family name Letunovskii (Letunovskii 
, Летуновский 
) , around the globe, is quite a rare last name. The family name Letunovskii is habitual in Eastern Europe, particularly Russia, where it is quite a rare surname, Bulgaria, and Belarus, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Letunovskii | Russia, Bulgaria |
| Летуновский | Kazakhstan, Belarus, Kyrgyzstan, Russia, Ukraine |