January 1–7 – In a violent, racially motivated attack, at least 8 people are killed, and the town of Rosewood, Florida is abandoned and destroyed.
January 9 – Lithuania begins the Klaipėda Revolt, to annex the Klaipėda Region (Memel Territory).
January 11 – Despite strong British protests, troops from France and Belgium occupy the Ruhr area, to force Germany to make reparations payments.
January 17 – Juan de la Cierva invents the autogyro, a rotary-winged aircraft with an unpowered rotor.
March 3 – The first issue of Time Magazine is published. Retired U.S. Speaker of the House Joseph G. Cannon appears on the cover.
March 9 – Vladimir Lenin suffers his third stroke, which renders him bedridden and unable to speak. Consequently he retires from his position as Chairman of the Soviet government.
April 18 – Yankee Stadium opens its doors, as the home park of the New York Yankees baseball team.
April 26 – Prince Albert, Duke of York (later George VI) marries Lady Elizabeth Bowes-Lyon (later Queen Elizabeth The Queen Mother) in Westminster Abbey.
April 28 – The original Wembley Stadium opens its doors for the first time to the British public, staging the FA Cup Final between Bolton Wanderers and West Ham United.
May 20 – British Prime Minister Bonar Law resigns, due to ill health. He dies in October.
May 23 – Stanley Baldwin is appointed British Prime Minister.
May 26 – The first 24 Hours of Le Mans motor race is held, and is won by André Lagache and René Léonard.
June 9 – A military coup in Bulgaria ousts prime minister Aleksandar Stamboliyski (he is killed June 14th)
June 13 – President Li Yuanhong of China abandons his residence, because a warlord has commanded forces to surround the mansion and cut off its water and electric supplies.
June 18 – Mount Etna erupts in Italy, making 60,000 homeless.
July 13 – The Hollywood Sign is inaugurated in California (originally reading Hollywoodland)
July 20 – Pancho Villa is assassinated at Hidalgo del Parral, Chihuahua.
July 24 – The Treaty of Lausanne (1923), settling the boundaries of the modern Republic of Turkey, is signed in Switzerland, bringing an end to the Ottoman Empire after 624 years.
August 2 – President Warren G. Harding dies of a heart attack, and is succeeded by Vice President Calvin Coolidge, who becomes the 30th President of the United States.
September 1 – The Great Kantō earthquake devastates Tokyo and Yokohama, killing an estimated 142,807 people
September 13 – Miguel Primo de Rivera siezes power in a military coup in Spain, setting up a dictatorship.
September 17 – A major fire in Berkeley, California, erupts, consuming some 640 structures, including 584 homes in the densely built neighborhoods north of the campus of the University of California.
October 29 – Turkey becomes a republic, following the dissolution of the Ottoman Empire; Kemal Atatürk is elected as first president.
November 8 – In Munich, Adolf Hitler leads the Nazis in an unsuccessful attempt to overthrow the Bavarian government. Police and troops crush the attempt the next day.
November 15 – Hyperinflation in Germany reaches its height. One US dollar is now worth 4,200,000,000,000 Papiermark. Chancellor Gustav Stresemann abolishes the old currency and replaces it with the Rentenmark.
December 1 – In Italy, the Gleno Dam on the Gleno River, in the Valle di Scalve in the northern province of Bergamo bursts, killing at least 356 people.
December 21 – The Nepal–Britain Treaty is the first to define the international status of Nepal, as an independent sovereign country.
