Turkmen Soviet Socialist Republic (, "Türkmenistan Sowet Sotsialistik Respublikasy"; , "Turkmenskaya Sovetskaya Sotsialisticheskaya Respublika"), also commonly known as Turkmenistan or Turkmenia, was one of the constituent republics of the Soviet Union in Central Asia. It existed as a republic from 1925 to 1991. Initially, on 7 August 1921, it was established as the Turkmen Oblast of the Turkestan ASSR before being made. On 13 May 1925, Turkmen ASSR was promoted to a union republic of the USSR as the Turkmen SSR.