An Admiral of the Fleet of the Soviet Union (Russian: Адмирал Флота Советского Союза, romanized: Admiral Flota Sovietskogo Soyuza) was the highest naval rank of the Soviet Union.
Upon its creation, the only two admirals of the fleet, Nikolai Kuznetsov and Ivan Isakov, were "promoted" to this rank. Less than a year later Kuznetsov was demoted to vice admiral for political reasons in 1956 and Isakov remained the only admiral of the fleet of the Soviet Union until his death in 1967. Then, in October 1967, Fleet Admiral Sergei Gorshkov became the third and final admiral of the fleet of the Soviet Union. Gorshkov died in 1988 and no further appointments were made before the fall of the Soviet Union in 1991 and the elimination of the rank.
From 1962 onwards, it was one grade higher than Fleet Admiral, which was recreated as an intermediate rank, equivalent to Army General.