1966 (MCMLXVI) was a common year starting on Saturday (the link is to a full 1966 calendar).
Events
January
- January 1 - In a coup, Colonel Jean-Bédel Bokassa ousts president David Dacko and takes over the Central African Republic.
- January 2 - Strike of public transportation workers in New York City - ends January 13
- January 3 - First Acid Test at the Fillmore, San Francisco
- January 4 - Military coup in Upper Volta (later Burkina Faso).
- January 4 - Prime ministers of India and Pakistan meet in Moscow
- January 4 - Fire due to a gas leak in Feyzin oil refinery near Lyon, France - 18 dead, 84 injured
- January 10 - Pakistani-Indian peace negotiations end successfully in Moscow
- January 10 - French paper L'Express publishes a story of Georges Figon, who took part of the kidnapping of Mehdi Ben Barka. January 18 French police announces that Figon has committed suicide just before he was about to be arrested
- January 11 - Conference about the situation in Rhodesia begins in Lagos
- January 11 - Indian prime minister Lal Bahadur Shastri dies
- January 12 - Lyndon Johnson states that the United States should stay in South Vietnam until Communist aggression there is ended.
- January 13 - Robert C. Weaver becomes the first African American Cabinet member by being appointed United States Secretary of Housing and Urban Development.
- January 15 - A violent military coup in Nigeria
- January 15 - Moscow announces Sergei Korolev's death
- January 17 - The Nigerian coup is overturned
- January 17 - A B-52 bomber collides with a KC-135 jet tanker over Spain, dropping three 70-kiloton hydrogen bombs near the town of Palomares and one into the sea
- January 17 - Carl Brashear, the first African American United States Navy diver, is involved in an accident on a routine mission which amputates his leg.
- January 18 - About 8000 US soldiers land in South Vietnam - numbers of US troops total 190.000
- January 19 - Indira Gandhi is elected Prime Minister of India - sworn in January 24
- January 19 - Australian Prime Minister Robert Menzies resigns
- January 20 - Demonstrations against high food prices in Hungary
- January 21 - Italian Prime Minister Aldo Moro resigns due to a power struggle in his party
- January 22 - Military government of Nigeria announces that ex-prime minister Abubakar Tafawa Balewa has been killed during the coup
- January 22 - The Chadian Muslim insurgent group FROLINAT is founded in Sudan, starting the Chadian Civil War
- January 26 - Harold Holt becomes Prime Minister of Australia when Robert Menzies retires
- January 26 - Beaumont children disappearance - Three children disappear on their way to Glenelg Beach, South Australia, and have never been seen again
- January 27 - British government promises USA that British troops in Malaysia stay until more peaceful conditions in the region
- January 29 - The first of 608 performances of Sweet Charity opens at the Palace Theatre in New York City.
- January 31 - United Kingdom ceases all trade with Rhodesia
- January - First SR-71 spy plane goes into service.
February
March
- March 1 - Soviet space probe Venera 3 crashes on Venus, becoming the first spacecraft to land on another planet's surface.
- March 1 - The Ba'ath Party takes power in Syria
- March 2 - Kwame Nkrumah arrives in Guinea and is granted an asylum
- March 4 - The Beatles: In an interview published in The Evening Standard, John Lennon comments, "We're more popular than Jesus now," eventually sparking a controversy in the United States.
- March 5 - Massive theft of nuclear materials revealed in Brazil
- March 7 - Charles De Gaulle asks US president Johnson for negotiations about the state of NATO equipment in France
- March 8 - Anti-communist demonstrations in Indonesian foreign ministry
- March 8 – Ronald Kray, one of the Kray twins, shoots rival gangster George Cornell; the incidents leads to brother's incarceration
- March 8 - Vietnam War: Australia announces it is going to substantially increase its number of troops in Vietnam
- March 8 - An IRA bomb destroys Nelson's Pillar in Dublin
- March 10 - Crown Princess Beatrix of the Netherlands marries Claus von Amsberg.
- March 10 - Wedding of Beatrix, the crown princess of Netherlands and Claus von Amsberg. Some spectators demonstrate against the groom, because he is German
- March 11 – Indonesian president Sukarno gives all executive powers to general Suharto
- March 11 - French president Charles De Gaulle states that French troops will be taken out of NATO and that all French NATO bases and HQ's must be closed within a year
- March 16 - Gemini 8 docks with Agena target satellite
- March 17 - More anti-communist demonstrations in Indonesia
- March 17 - Off the coast of Spain in the Mediterranean, the Alvin submarine finds a missing American hydrogen bomb.
April
May
June
July
- July 1 - Joaquin Balaguer becomes president of the Dominican Republic.
- July 3 - Rene Barrientos elected president of Bolivia
- July 4 - North Vietnam declares general mobilization
- July 4 - President Lyndon B. Johnson signs the Freedom of Information Act into law. The act goes into effect the following year.
- July 6 - Malawi becomes a republic
- July 7 - Conference of Warsaw Pact ends with a promise to support North Vietnam
- July 12 - Indira Gandhi visits Moscow
- July 12 - Zambia threatens to leave the Commonwealth of Nations because of British peace overtures to Rhodesia
- July 12 - US lieutenant major W.H. Whalen arrested for spying
- July 14 - Israeli and Syrian jet fighters fight over the Jordan River
- July 14 - In Chicago, Illinois, Richard Speck murders eight student nurses in their dormitory
- July 14 - Gwynfor Evans becomes member of Parliament for Carmarthen, the first Plaid Cymru MP in the UK.
- July 16 - Ann and Don McLeod of Bedford, Nova Scotia, are married in Downsview, Ontario
- July 16 - British Prime Minister Harold Wilson flies to Moscow to try to start peace negotiations about Vietnam War - Soviet Government refutes his ideas
- July 17 - Richard Speck arrested - he tries to commit suicide but fails
- July 18 - Gemini 10 lifts off for earth orbit with astronauts John Young and Michael Collins, setting a world altitude record of 474 miles.
- July 18 - The Hough Riots break out in Cleveland, Ohio, the city's first race riot.
- July 19 - Chinese delegate in Netherlands, Liu en-Tsiu, is declared persona non grata because of death of a Chinese engineer in unclear circumstances; there are claims that he was kidnapped and taken to the delegate's office
- July 22 - Chinese government announces Dutch delegate G. J. Jongejans persona non grata but tells him not to leave the country before group of Chinese engineers has left the Netherlands
- July 23 - Katangese troops in Stanleyville, Congo, revolt in support of the exiled minister Moise Tschombe. Mutiny lasts several weeks
- July 24 - U Thant visits Moscow
- July 26 - Lord Gardiner issues the Practice Statement in the House of Lords stating that the House is not bound to follow its own previous precedent
- July 28 - USA announces that U-2 reconnaissance plane has disappeared over Cuba
- July 29 - Nigerian army rebels and execute the head of state General Aguiyi-Ironsi
- July 30 - England beat West Germany 4-2 to win the 1966 World Cup at Wembley
August
- August 1 - Sniper Charles Whitman kills 13 from the University of Texas at Austin Main Building.
- August 1 - Military coup in Nigeria - General Yakubu Gowon takes over
- August 2 - Spanish government forbids overflights of British military aircraft
- August 5 - Martin Luther King leads a civil rights march in Chicago, during which he is struck with a rock thrown from an angry white mob.
- August 6 - Braniff Airlines Flight 250 crashes in Falls City, NE killing all 42 on board.
- August 6 - Rene Barrientos takes office as the president of Bolivia
- August 6 - Bridge over the Tagus River in Lisbon, Portugal, is opened
- August 7 - Race riots occur in Lansing, Michigan.
- August 10 - East German court sentences Günter Laudahn to life imprisonment for espionage for USA
- August 10 - Lunar Orbiter 1, the first US spacecraft to orbit another world, is launched
- August 11 - The Beatles hold a press conference in Chicago, during which John Lennon apologizes for his "more popular than Jesus" remark, saying, "I didn't mean it as a lousy anti-religious thing."
- August 12 - In the Massacre of Braybrook Street, Harry Roberts, John Duddy and Jack Witney shoot dead three plain clothes policemen in London - they are later sentenced to life imprisonment
- August 13 - China begins Cultural Revolution
- August 13 - An earthquake in Turkey - 2394 dead, 10000 injured
- August 15 - Syrian and Israeli troops clash over Lake Genesaret for three hours
- August 15 - New York Herald Tribune stops publication
- August 16 - Vietnam War: The House Un-American Activities Committee begins investigations of Americans who have aided the Viet Cong with the intent to introduce legislation making these activities illegal. Anti-war demonstrators disrupt the meeting and 50 are arrested.
- August 17 - Saudi Arabia and United Arab Republic begin negotiations in Kuwait to end the war in Yemen
- August 18 - Vietnam War: D Company, 6th Battalion of the Royal Australian Regiment meets and defeats a Viet Cong force estimated to be four times larger, at the Battle of Long Tan in Phuoc Tuy Province, Republic of Vietnam
- August 19 - Earthquake in eastern Turkey destroys whole cities
- August 21 - Seven men sentenced to death in Egypt for anti-Nasser agitation
- August 22 - Formation of the United Farm Workers Organizing Committee (UFWOC), predecessor of the United Farm Workers of America (UFW)
- August 26 - Riots in French Somaliland
- August 29 - British Rock band The Beatles play their very last concert at Candlestick Park in San Francisco, California.
- August 30 - France offers independence to French Somaliland
September
October