1939 in the Soviet Union

Incumbents

• General Secretary of the Communist Party of the Soviet Union – Joseph Stalin
• Chairman of the Presidium of the Supreme Soviet of the Soviet Union – Mikhail Kalinin
• Chairman of the Council of People's Commissars of the Soviet Union – Vyacheslav Molotov

  Events

• March 10–21 – 18th Congress of the All-Union Communist Party
• May 11 – September 16 – Battles of Khalkhin Gol
• August 19 – German–Soviet Credit Agreement
• August 23 – Molotov–Ribbentrop Pact
• September 17-October 6 – Soviet invasion of Poland
• September 28 – Soviet–Estonian Mutual Assistance Treaty
• October 5 – Soviet–Latvian Mutual Assistance Treaty
• October 10 – Soviet–Lithuanian Mutual Assistance Treaty
• November 26 – Shelling of Mainila

  Births

Deaths

• February 2 – Vladimir Shukhov
• February 22 – Grigory Khakhanyan
• February 23
• * Pyotr Smirnov
• * Alexander Ilyich Yegorov
• February 26
• * Stanislav Kosior
• * Vlas Chubar
• * Pavel Postyshev
• * Ivan Fedko
• March 3 – Georgy Bazilevich
• March 7 – Matvei Berman
• March 10 – Georgy Bondar
• April 1 – Anton Makarenko
• May 19 – Karl Radek
• May 21 – Grigori Sokolnikov
• September 11 – Konstantin Korovin