Last name Osetskii (Osetskii 
, Осетский 
, Осецкий 
) , globally, is a rare family name. The surname Osetskii is characteristic of Belarus, where it is a rare surname, Russia, and Kyrgyzstan, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Eastern Europe, particularly Russia, Belarus, and Ukraine.