The Military Revolutionary Committee of the Petrograd Soviet, in charge of preparation and carrying out the Russian Revolution, holds its first meeting.

The Petrograd Military Revolutionary Committee (PMRC) (Russian: Петроградский военно-революционный комитет, romanized: Petrogradskiy voyenno-revolyutsionnyy komitet) was a militant group of the Petrograd Soviet and one of several military revolutionary committees that were created in the Russian Republic. Initially the committee was created on 25 October 1917 after the German army secured the city of Riga and the West Estonian Archipelago (see Operation Albion). The committee's resolution was adopted by the Petrograd Soviet on October 29, 1917.