Joseph Orbeli (Armenian: Հովսեփ Աբգարի Օրբելի, Hovsep Abgari Orbeli; Russian: Иосиф Абгарович Орбели, Iosif Abgarovich Orbeli; 20 March (O.S. 8 March) 1887 – 2 February 1961) was a Soviet-Armenian orientalist, public figure and academician who specialized in medieval history of Transcaucasia and administered the Hermitage Museum in Leningrad from 1934 to 1951. Of Armenian descent, he was the founder and first president of the Armenian National Academy of Sciences (1943–47).