1933 in the Soviet Union

Russian poet and essayist (1891-1938)

Soviet-era prison island event

1931–1934 uprisings by Khanty and Nenets in the Soviet Union

poem by Osip Mandelstam

bilateral treaty between the Soviet Union and fascist Italy

Belarusian orthography reform

right|200px|thumb USSR-1 () was a record-setting, hydrogen-filled Soviet Air Forces high-altitude balloon designed to seat a crew of three and perform scientific studies of the Earth's stratosphere. On September 30, 1933, USSR-1 under Georgy Prokofiev's command set an unofficial world altitude record of .