1921 1922 1923 - 1924 - 1925 1926 1927
1890s 1900s 1910s - 1920s - 1930s 1940s 1950s
- January 7 - Great fire in London harbour.
- January 10 - British submarine L-34 sinks in the English Channel - forty-three dead.
- January 12 - Gopinath Saha shoots a man he erroneously thinks is a Police commissioner of Calcutta, Charles Augustus Tegart - he is arrested soon after.
- January 21 - Vladimir Lenin dies and Joseph Stalin begins to purge his rivals to clear way for his leadership.
- January 22 - Ramsay MacDonald becomes the first Labour Prime Minister.
- January 23 - Soviet Union officially declares that Lenin died January 21.
- January 25 - The 1924 Winter Olympics open in Chamonix, France (in the French Alps), inaugurating the Winter Olympic Games.
- January 26 - Petrograd (St. Petersburg) is renamed Leningrad.
- January 27 - Lenin is buried in a mausoleum (Lenin's Tomb) in Moscow's Red Square.
- February 1
- February 4 - Mohandas Gandhi is released prematurely on medical grounds.
- February 5 - GMT: Hourly time signals from Royal Greenwich Observatory are broadcasted for the first time.
- February 7 - Death penalty: The first state execution using gas in the United States takes place in Nevada.
- February 14 - IBM corporation founded.
- February 16-February 26 - Dock strike in US harbors.
- February 22 - Calvin Coolidge becomes the first President of the United States to deliver a radio broadcast from the White House.
- Adolf Hitler begins dictating his book, Mein Kampf (or in English, My Struggle), while imprisoned in Bavaria.
- March 1 - Diana Vreeland, fashion editor and columnist, marries Thomas Reed Vreeland at St. Thomas's church in New York.
- March 3 - The 1400-year-old Islamic caliphate is abolished when Caliph Abdul Mejid II of the Ottoman Empire is deposed. The last remnant of the old regime gives way to the reformed Turkey of President Kemal Atatürk.
- March 8 - Castle Gate mine disaster kills 172 coal miners in Utah, United States
- March 9 - Italy annexes Fiume
- March 25 - Greece proclaims it is a republic.
- March 29 - Third Ministry of Raymond Poincaré starts in France.
- April 1
- April 6 - Fascists win elections in Italy with ⅔ majority.
- April 13 - Referendum in Greece favors the formation of Hellenic Republic.
- April 13 - A.E.K, one of the most successful football clubs in Greece, is founded.
- April 26 - Harry Grindell Matthews demonstrates his "death ray" in London but fails to convince British War Office
- April 27 - Group of Alawites kill some Christian nuns in Syria – French troops march against them.
- May 3 - The Aleph Zadik Aleph, the oldest Jewish youth fraternity, founded.
- May 4 - The 1924 Summer Olympics opening ceremonies held in Paris, France.
- May 10 - J. Edgar Hoover is appointed head the Bureau of Investigation.
- May 11 - Mercedes-Benz formed by the merging companies owned by Gottlieb Daimler and Karl Benz.
- May 21 - University of Chicago students Richard Loeb and Nathan Leopold, Jr. murder 14-year-old Bobby Franks in a thrill killing.
- June 1 - Harry Grindell Matthews returns from Paris to London - he tries to use a Pathe film to demonstrate that his death ray works
- June 2 - U.S. President Calvin Coolidge signs the Indian Citizenship Act into law, granting citizenship to all Native Americans born within the territorial limits of the United States.
- June 3 - Franz Kafka dies in Vienna, Austria. His death is attributed to starvation, brought on by worsening Tuberculosis
- June 5 - Ernst Alexanderson sends the first facsimile across the Atlantic Ocean (to his father in Sweden).
- June 7 - Ed Farhat, "The Original Sheik", is born.
- June 8 - George Mallory and Andrew Irvine are last seen "going strong for the top" of Mount Everest by teammate Noel Odell at 12:50 PM. The two mountaineers were never seen alive again.
- June 10 - Fascists kidnap and kill Italian socialist leader Giacomo Matteotti in Rome.
- June 12 - the Roundout Heist - Six men of Egan's Rats gang rob a mail train in Roundout, Illinois. Robbery is later found to have been an inside job
- June 16 - Whampoa Military Academy is founded.
- June 23 - American airman Russell L. Maughan flew from New York to San Francisco in 21 hours and 48 minutes on a dawn-to-dusk flight in a Curtiss pursuit
- July 17 - Voting in federal elections becomes compulsory in Australia, after a private member's bill proposed by Tasmanian Nationalist senator Herbert Payne results in the passing of the Commonwealth Electoral (Compulsory Voting) Act 1924.
- July 20 - A Soviet sports newspaper Sovetskiy Sport is founded.
- August 18 - France begins to withdraw its troops from Germany.
- August 28 - Georgia rose against the Soviet Union in the abortive rebellion in which several thousands died.
- September 9
- September 9 - 11 - 1924 Kohat riots
- October 2 - The Geneva Protocol is adopted as a means to strengthen the League of Nations.
- October 10 - Alpha Delta Gamma National Fraternity is founded at the Lake Shore Campus of Loyola University, Chicago.
- October 19 - Abdul Azis declares himself protector of holy places in Mecca.
- October 22 - Toastmasters is founded.
- October 24
- October 25 - British authorities in India arrest Subhas Chandra Bose and jail him for the next two and half years
- October 27 - The Uzbek SSR joins the Soviet Union.
- November 4
- November 19 - In Los Angeles, California, famous silent film director Thomas Ince ("The Father of the Western") dies, reportedly of a heart attack, in his bed (rumors soon surface that he was shot dead by publishing tycoon William Randolph Hearst).
- November 27 - In New York City the first Macy's Thanksgiving Day Parade is held.
- December 1 - Failed communist coup attempt in Estonia.
- December 19 - Fritz Haarmann sentenced to death for a series of murders.
- December 24
- April 13 - J. B. Stoner, American White activist and chairman of the National States Rights Party (d. 2005)
- June 12 - George H. W. Bush, 41st President of the United States
- August 6 - Sam Bowers, Ku Klux Klan leader (d. 2006)