Ukrainian SSR
- Moldavian ASSR (1924–1940). In 1940, it was separated into Moldavian SSR (now the independent state of Moldova).
- Crimean ASSR (February 12, 1991 – ). Crimea Oblast was promoted to the ASSR status following a referendum held on January 20, 1991 (now Autonomous Republic of Crimea).
Read more about this topic: Autonomous Republics Of The Soviet Union