Look up USSR in Wiktionary, the free dictionary.
USSR most commonly refers to the Soviet Union.
USSR may also refer to:
- The Ukrainian Soviet Socialist Republic (1919–1991)
- The Polish Soviet Republic
- The Hungarian Soviet Republic
- The Czechoslovak Soviet Republic
- The Uzbek Soviet Socialist Republic (1924–1991)
- The Romanian Soviet Republic
- The Bulgarian Soviet Socialist Republic
- The Estonian Soviet Republic
- The Union of Soviet Sovereign Republics, a proposed replacement state for the Union of Soviet Socialist Republics
- The USSR, a former Soviet magazine distributed in the United States; its modern successor is Russian Life
- "U.S.S.R." (song), a hit song by eurodance singer Eddy Huntington, recorded in 1986
- "U.S.S.R.", a bonus track from a reissue of Siamese Dream by Smashing Pumpkins