The 9th Tank Division was the designation of two separate formations of the Soviet Army. The original 9th Tank Division was formed in 1940 and later reorganized into a different division. During World War II, the Soviet Army formed the 9th Tank Corps, which was renamed the 9th Tank Division after the defeat of Germany in 1945. This second instance of the 9th Tank Division served with the Group of Soviet Forces in Germany from 1945 until about 1991, when it was disbanded.