The 1907 Tiflis bank robbery, also known as the Yerevan Square expropriation, was an armed robbery on 26 June 1907 in the city of Tiflis in the Tiflis Governorate in the Caucasus Viceroyalty of the Russian Empire (now Georgia's capital, Tbilisi). A bank cash shipment was stolen by Bolsheviks to fund their revolutionary activities. The robbery was organized by a number of top-level Bolsheviks, including Vladimir Lenin, Joseph Stalin, Maxim Litvinov, Leonid Krasin, and Alexander Bogdanov, and executed by a party of revolutionaries led by Stalin's early associate Ter-Petrosian (Kamo). Because such activities were explicitly prohibited by the 5th Congress of the Russian Social Democratic Labour Party (RSDLP), the robbery and the killings caused outrage within the party against the Bolsheviks (a faction within the RSDLP). As a result, Lenin and Stalin tried to distance themselves from the robbery.
Stalin organized the robbing of a large delivery of money to the Imperial Bank in June 1907. His gang ambushed the armed convoy in Yerevan Square with gunfire and home-made bombs. Around 40 people were killed, but all of his gang escaped alive.