Aleksej Jelacic (Russian: ??????? ??????; Serbian Cyrillic: ??????? ???????, also sometimes written Aleksije; January 10, 1892 – October 24, 1941) was a Serbian historian.
Jelacic was born in Kiev to a family of South Slavic descent; reportedly his ancestors moved to Russia in the 18th century from the Habsburg Empire.He became a senior lecturer at the Saint Vladimir University in Kiev.
He emigrated to Yugoslavia in 1920 and earned his doctor of philosophy from the University of Ljubljana in 1924.
He then became a professor at the University in Skopje.
Jelacic authored research on historical and literary themes including protopope Avvakum, Dostoevsky, the history of Russia, Russian revolution, and history of Czechoslovakia, Poland, and other Slavic countries.
He died in Belgrade in 1941.