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1950 (MCML)was a common year starting on Sunday of the Gregorian calendar, the 1950th year of the Common Era (CE) and Anno Domini (AD) designations, the 950th year of the 2nd millennium, the 50th year of the 20th century, and the 1st year of the 1950s decade.
- February 1 – Chiang Kai-shek is re-elected as president of the Republic of China.
- February 4 – Ingrid Bergman's illegitimate child arouses ire in the U.S.
- February 6
- February 8
- February 9 – Second Red Scare: In his speech to the Republican Women's Club at the McClure Hotel in Wheeling, West Virginia, Senator Joseph McCarthy accuses the United States Department of State of being filled with 205 Communists.
- February 11
- February 12
- February 13
- February 14 – Cold War:
- The Soviet Union and the People's Republic of China sign a mutual defense treaty (later terminated in 1979).
- In an election speech at Edinburgh, Winston Churchill proposes "a parley at the summit" with Soviet leaders, the first use of the term "summit" for such a meeting.
- February 15
- February 19 – Konrad Adenauer tries unsuccessfully to negotiate with East Germany, to begin unification.
- February 21 – Cunard liner Aquitania arrives at the scrapyard in Faslane at the end of a 36-year career, the longest of any in the 20th Century.
- February 23 – 1950 United Kingdom general election: The Labour Party, led by Clement Attlee, remains in office, but the Tories, led by Winston Churchill, increase their seats in the House of Commons.
- August 1 – Crusader Rabbit, the first animated TV series, debuts on television in the United States.
- August 5
- August 6 – Monarchist demonstrations lead to a riot in Brussels.
- August 8
- August 12
- August 15 – The 8.6 Mw Assam–Tibet earthquake shakes the region, with a maximum Mercalli intensity of XI (Extreme), killing between 1,500–3,300 people.
- August 17 – Korean War – Hill 303 massacre: 39 U.S. soldiers are executed, after being captured in battle by North Korea.
- August 22 – The Immaculate Heart of Mary Seminary is founded in Tagbilaran City, Philippines.
- August 23 – Legendary singer-actor Paul Robeson, whose passport had recently been revoked because of his alleged Communist affiliations, meets with U.S. officials in an effort to get it reinstated. He is unsuccessful, and it is not reinstated until 1958.
- November 1
- November 4 – The United Nations ends the diplomatic isolation of Spain.
- November 8 – Korean War: While in an F-80, United States Air Force Lt. Russell J. Brown intercepts 2 North Korean MiG-15s near the Yalu River and shoots them down, in the first jet-to-jet dogfight in history.
- November 10 – A U.S. Air Force B-50 Superfortress bomber, experiencing an in-flight emergency, jettisons and detonates a Mark 4 nuclear bomb over Quebec, Canada (the device lacks its plutonium core).
- November 11 – The Mattachine Society is founded in Los Angeles, California, as the first gay-liberation organization.
- November 13
- November 17 – Tenzin Gyatso, 15, is formally enthroned as the 14th Dalai Lama, becoming temporal ruler of Tibet.
- November 18 – The United Nations accepts the formation of the Libyan National Council.
- November 20 – T. S. Eliot speaks against television in the UK.
- November 22
- November 24 – A phenomenal winter storm ravages the northeastern United States, brings 30–50 inches of snow and temperatures below zero, and kills 323 people.
- November 26 – Korean War: Troops from the People's Republic of China launch a massive counterattack against South Korean and United Nations forces at the Ch'ongch'on River and the Chosin Reservoir, dashing any hopes for a quick end to the conflict.
- November 28
- The Colombo Plan for Co-operative Economic Development in South and South-East Asia comes into effect.
- Greece and Yugoslavia reform diplomatic relations.
- November 29 – The National Council of the Churches of Christ in the USA is founded.
- November 30 – Douglas MacArthur threatens to use nuclear weapons in Korea.