Filipp Sergeyevich Ivanov (Russian: Филипп Сергеевич Иванов; 23 October [O.S. 11 October] 1899 – 8 July 1969), more popularly known as Filipp Sergeyevich Oktyabrsky (Russian: Филипп Сергеевич Октябрьский), was a Soviet naval commander. He began service in the Baltic Fleet in 1918. From 1925 to 1927 he studied at the Naval Academy in Leningrad. As vice-admiral he was given command of the Black Sea Fleet in March 1939 and headed its actions during the Sieges of Sevastopol (1941–1942) and Odessa (1941). After the war he became a Deputy Commander-in-Chief of the Navy, commander of all naval test c