January 27 - More than sixty nations sign the Outer Space Treaty banning nuclear weapons in space.
February 2 - The American Basketball Association is formed.
February 3 - Ronald Ryan, the last person to be executed in Australia, is hanged in Pentridge Prison, Melbourne.
February 7 - A fire at a restaurant in Montgomery, Alabama kills 25 people.
February 10 - The 25th Amendment to the United States Constitution ratified.
February 27 - Dominica gains independence from the United Kingdom.
March 9 - Joseph Stalin's daughter Svetlana Alliluyeva defects to the United States.
March 12 - Suharto takes over from Sukarno to become President of Indonesia.
March 14 - The body of President John F. Kennedy is moved to a permanent burial place at Arlington National Cemetery.
March 18 - The Supertanker Torrey Canyon runs aground off the Cornish coast.
March 26 - Ten thousand people gather for the Central Park Be-In.
April 1 - The United States Department of Transportation begins operation.
April 4 - Martin Luther King, Jr. delivers his "Beyond Vietnam: A Time to Break Silence" speech in New York City's Riverside Church.
April 9 - The first Boeing 737 (a 100 series) makes its maiden flight.
April 15 - Scotland defeats rival England 3-2 at Wembley Stadium, causing the Scots fans to jokingly claim their side as "Unofficial world Champions", creating the phenomenon of the Unofficial Football World Championships.
April 20 - A Globe Air Bristol Britannia turboprop crashes at Nicosia, Cyprus, killing 126.
April 21 - A few days before the general election in Greece, Colonel George Papadopoulos leads a coup d'état, establishing a military regime that lasts for seven years.
April 23 - A group of young radicals are expelled from the Nicaraguan Socialist Party (PSN). This group goes on to found the Socialist Workers Party (POS).
April 24 - Cosmonaut Vladimir Komarov dies in Soyuz 1, when the parachute fails to open. He is the first human to die during a space mission.
April 24 - Vietnam War: American General William Westmoreland says in a news conference that the enemy had "gained support in the United States that gives him hope that he can win politically that which he cannot win militarily."
April 27 - Expo 67 officially opens in Montreal, Canada with a large opening ceremony broadcast around the world. It opens to the public the next day.
April 28 - Expo 67 opens to the public in Montreal, Quebec, Canada.
April 29 - After refusing induction into the United States Army the day before (citing religious reasons), Muhammad Ali is stripped of his boxing title.
May 8 - The Philippine province of Davao is split into three: Davao del Norte, Davao del Sur, and Davao Oriental.
May 11 - Andreas Papandreou, Greek economist and socialist politician, is imprisoned in Athens by the Greek military junta.
May 12 - At Queen Elizabeth Hall, England, Pink Floyd stages the first-ever quadraphonic rock concert.
May 13 - Dr. Zakir Hussain becomes the third President of India. He is the first Muslim President of Indian Union. He holds this position till August 24, 1969.
May 17 - Six-Day War: President Abdul Nasser of Egypt demands dismantling of the peace-keeping UN Emergency Force in Egypt.
May 22 - The L'Innovation department store in the centre of Brussels, Belgium, burns down. It is the most devastating fire in Belgian history, resulting in 323 dead and missing and 150 injured.
May 23 - Egypt closes the Straits of Tiran and blockades the port of Eilat at the northern end of the Gulf of Aqaba to Israeli shipping, laying the foundations for the Six Day War.
May 25 - The Celtic Football Club becomes the first British, Scottish and Northern European football club to win the European Cup
May 27 - Australians vote in favor of a constitutional referendum granting the Australian government the power to make laws to benefit Indigenous Australians and to count them in the national census.
May 27 - The U.S. Navy aircraft carrier USS John F. Kennedy (CV-67) is christened by Jacqueline Kennedy and her daughter Caroline.
May 30 - At the Ascot Park in Gardena, California, daredevil Evel Knievel jumps his motorcycle over 16 cars lined up in a row.
May 30 - The Nigerian Eastern Region declares independence as the Republic of Biafra, sparking a civil war.
June 1 - The groundbreaking Sgt. Pepper's Lonely Hearts Club Band album by The Beatles is released
June 2 - Protests in West Berlin against the arrival of the Shah of Iran turn into riots, during which Benno Ohnesorg is killed by a police officer. His death results in the founding of the terrorist group Movement 2 June.
June 4 - Stockport Air Disaster: British Midland flight G-ALHG crashes in Hopes Carr, Stockport, killing 72 passengers and crew.
June 5 - Six-Day War begins: The Israeli air force launches simultaneous pre-emptive attacks on the air forces of Egypt, Jordan, and Syria.
June 7 - The Israeli forces enter Jerusalem during the Six-Day War.
June 8 - Six-Day War: The USS Liberty incident occurs, killing 34 and wounding 171.
June 9 - Israel captures the Golan Heights from Syria during the Six-Day War.
June 10 - Six-Day War ends: Israel and Syria agree to a cease-fire.
June 10 - Argentina becomes a member of the Berne Convention copyright treaty.
June 11 - Mexico becomes a member of the Berne Convention copyright treaty.
June 12 - The United States Supreme Court in Loving v. Virginia declares all U.S. state laws which prohibit interracial marriage to be unconstitutional.
June 12 - Venera program: Venera 4 is launched (it will become the first space probe to enter another planet's atmosphere and successfully return data).
June 13 - U.S. President Lyndon B. Johnson nominates Solicitor-General Thurgood Marshall to become the first black justice on the U.S. Supreme Court.
June 14 - Mariner program: Mariner 5 is launched toward Venus.
June 16 - The three-day Monterey International Pop Music Festival begins in Monterey, California.
June 23 - Cold War: U.S. President Lyndon B. Johnson meets with Soviet Premier Aleksei Kosygin in Glassboro, New Jersey for the three-day Glassboro Summit Conference.
June 25 - First global satellite television programme – Our World
June 27 - The world's first ATM is installed in Enfield, London.
July 10 - Uruguay becomes a member of the Berne Convention copyright treaty.
July 23 - 12th Street Riot: In Detroit, Michigan, one of the worst riots in United States history begins on 12th Street in the predominantly African American inner city (43 killed, 342 injured and 1,400 buildings burned).
July 24 - During an official state visit to Canada, French President Charles de Gaulle declares to a crowd of over 100,000 in Montreal: Vive le Québec libre! ("Long live free Quebec!"). The statement, interpreted as support for Quebec independence, delighted many Quebecers but angered the Canadian government and many English Canadians.
July 29 - Vietnam War: off the coast of North Vietnam the USS Forrestal catches on fire in the worst U.S. naval disaster since World War II, killing 134.
July 29 - At the fourth day of celebrating its 400th anniversary, the city of Caracas, Venezuela was shaken by an earthquake, leaving approximately 500 dead.
August 2 - The second Blackwall Tunnel opens in Greenwich, London.
August 7 - Vietnam War: the People's Republic of China agrees to give North Vietnam an undisclosed amount of aid in the form of a grant.
August 8 - The Association of Southeast Asian Nations (ASEAN) is founded by Indonesia, Malaysia, the Philippines, Singapore and Thailand.
August 14 - UK Marine Broadcasting Offences Act declares participation in offshore pirate radio illegal.
August 24 - Led by Abbie Hoffman, a group of hippies temporarily disrupt trading at the NYSE by throwing dollar bills from the viewing gallery, causing a cease in trading as the brokers scramble to grab them up.
August 30 - Thurgood Marshall is confirmed as the first African American Justice of the United States Supreme Court.
September 2 - The Principality of Sealand is established, ruled by Prince Paddy Roy Bates.
September 3 - Dagen H in Sweden: traffic changes from driving on the left to driving on the right overnight
September 4 - Vietnam War: Operation Swift begins: U.S. Marines engage the North Vietnamese in battle in the Que Son Valley.
September 8 - The formal end of steam traction in the North East of England by British Railways.
September 10 - The people of Gibraltar vote to remain a British dependency rather than becoming part of Spain.
September 20 - The RMS Queen Elizabeth 2 is launched at John Brown & Company, Clydebank, Scotland. It is operated by the Cunard Line.
September 30 - BBC Radio 1 is launched and Tony Blackburn presents its first show; the BBC's other national radio stations also adopt numeric names.
October 2 - Thurgood Marshall is sworn in as the first African-American justice of United States Supreme Court.
October 4 - Omar Ali Saifuddin III of Brunei abdicates in favour of his son, His Majesty Sultan Hassanal Bolkiah.
October 8 - Guerrilla leader Che Guevara and his men are captured in Bolivia.
October 9 - A day after being captured, Marxist revolutionary Ernesto "Che" Guevara is executed for attempting to incite a revolution in Bolivia.
October 10 - The Outer Space Treaty, signed on January 27 by more than sixty nations, comes into force.
October 12 - Vietnam War: US Secretary of State Dean Rusk states during a news conference that proposals by the U.S. Congress for peace initiatives were futile because of North Vietnam's opposition
October 13 - The first game in the history of the American Basketball Association is played as the Anaheim Amigos lose to the Oakland Oaks 134-129 in Oakland, California.
October 14 - Vietnam War: Folk singer Joan Baez is arrested in a blockade of the military induction center in Oakland, California.
October 18 - The Soviet probe Venera 4 reaches Venus and becomes the first spacecraft to measure the atmosphere of another planet.
October 20 - A purported bigfoot is filmed by Patterson and Gimlin.
October 21 - Vietnam War: More than 100,000 war protesters gather in Washington, DC. A peaceful rally at the Lincoln Memorial is followed by a march to The Pentagon and clashes with soldiers and United States Marshals protecting the facility (event lasts until October 23; 683 people were arrested). Similar demonstrations occurred simultaneously in Japan and Western Europe.
October 29 - London criminal Jack McVitie is murdered by the Kray twins, leading to their eventual imprisonment and downfall.
October 29 - Montreal's World Fair, Expo 67, closes with over 50 million visitors.
November 2 - Vietnam War: US President Lyndon B. Johnson and "The Wise Men" conclude that the American people should be given more optimistic reports on the progress of the war.
November 3 - Vietnam War: The Battle of Dak To begins.
November 5 - The Hither Green rail crash in the United Kingdom kills 49 people. The survivors include Bee Gee Robin Gibb.
November 7 - Carl B. Stokes is elected as Mayor of Cleveland, Ohio, becoming the first African American mayor of a major American city.
November 7 - US President Lyndon B. Johnson signs the Public Broadcasting Act of 1967, establishing the Corporation for Public Broadcasting.
November 9 - Apollo program: NASA launches the unmanned Apollo 4 test spacecraft atop the first Saturn V rocket from Cape Kennedy, Florida.
November 9 - First issue of Rolling Stone Magazine is published.
November 11 - Vietnam War: In a propaganda ceremony in Phnom Penh, Cambodia, three American prisoners of war are released by the Viet Cong and turned over to "new left" antiwar activist Tom Hayden.
November 14 - The Congress of Colombia in commemoration of the 150 years of the death of Policarpa Salavarrieta, declares this day as "Day of the Colombian Woman".
November 15 - The only fatality of the X-15 program occurs during the 191st flight when Air Force test pilot Michael J. Adams loses control of his aircraft which is destroyed mid-air over the Mojave Desert.
November 17 - Vietnam War: Acting on optimistic reports he was given on November 13, US President Lyndon B. Johnson tells his nation that, while much remained to be done, "We are inflicting greater losses than we're taking...We are making progress."
November 19 - The establishment of TVB, the first wireless commercial television station in Hong Kong.
November 21 - Vietnam War: American General William Westmoreland tells news reporters: "I am absolutely certain that whereas in 1965 the enemy was winning, today he is certainly losing."
November 22 - UN Security Council Resolution 242 is adopted by the UN Security Council, establishing a set of the principles aimed at guiding negotiations for an Arab-Israeli peace settlement.
November 29 - Vietnam War: U.S. Secretary of Defense Robert McNamara announces his resignation.
November 30 - The People's Republic of South Yemen becomes independent from the United Kingdom.
November 30 - The Pakistan Peoples Party is founded by Zulfiqar Ali Bhutto who becomes its first Chairman later as the Head of state and Head of government after the 1971 Civil War.
December 3 - At Groote Schuur Hospital in Cape Town, South Africa, a transplant team headed by Christiaan Barnard carries out the first heart transplant on a human (53-year-old Louis Washkansky).
December 3 - The luxury train 20th Century Limited completes its last run from New York City to Chicago (the train was inaugurated on June 15, 1902).
December 4 - Vietnam War: US and South Vietnamese forces engage Viet Cong troops in the Mekong Delta.
December 13 - Constantine II of Greece attempts an unsuccessful counter-coup against the Regime of the Colonels
December 13 - San Diego, CA records snow at a zero elevation after temperatures plunge 19 degrees (F) in eight hours.
December 15 - The Silver Bridge collapses, killing 46 people.
December 17 - Prime Minister of Australia Harold Holt disappears while swimming near Portsea, Victoria and was presumed drowned.
December 19 - Prime Minister of Australia Harold Holt is officially presumed dead.
December 21 - Louis Washkansky, the first man to undergo a heart transplant, dies in Cape Town, South Africa, after living for 18 days.