Tatar Autonomous Soviet Socialist Republic (TASSR, Tatar:Татарстан Автономияле Совет Социалистик Республикасы; Russian:Татарская Автономная Советская Социалистическая республика (ТАССР)) (1920–1990) was part of the Russian Soviet Federative Socialist Republic. It was created on May 27, 1920. Kazan served as its capital.