1926 1927 1928 - 1929 - 1930 1931 1932
1890s 1900s 1910s - 1920s - 1930s 1940s 1950s
- January 2 - Canada and the United States agree on a plan to preserve Niagara Falls.
- January 18 - Leon Trotsky expelled from Soviet Union; he moves to Turkey in January 29 and applies for sanctuary in France and Germany.
- February 11 - Italy and the Vatican sign the Lateran Treaty.
- February 14 - St. Valentine's Day Massacre: Seven gangsters, rivals of Al Capone, are murdered in Chicago.
- February 26 - The Grand Teton National Park is established by Congress.
- March 3 - Revolt attempt of Generals José Gonzalo Escobar and Jesús María Aguirre fails in Mexico.
- March 4 - Herbert Hoover is inaugurated as the 31st President of the United States, succeeding Calvin Coolidge.
- May - Wickersham Commission begins investigation of alcohol prohibition in U.S.
- May 13 - National Crime Syndicate founded in Atlantic City.
- May 15 - A fire at the Cleveland Clinic in Cleveland, Ohio kills 123.
- May 17 - Al Capone and bodyguard were arrested for concealing deadly weapons.
- May 31 - British general election returns a hung parliament yet again - Liberals will determine who has power.
- June 7
- June 8 - Ramsay MacDonald founds new Labour government.
- June 16 - Otto E. Funk, 62, ends marathon walk (New York City to San Francisco, 4165 miles in 183 days).
- June 21 - Agreement brokered by US ambassador Dwight Whitney Morrow ends the Cristero War in Mexico.
- June 27 - First public demonstration of color TV, by H. E. Ives and his colleagues at Bell Telephone Laboratories in New York.
- July 24
- July 25 - Pope Pius XI emerges from the Vatican and enters St. Peter's square in a huge procession witnessed by about 250,000 persons, thus ending nearly 60 years of papal self-imprisonment within the Vatican.
- July 27 - Third Geneva Convention.
- August 8 - The German airship Graf Zeppelin begins a round-the-world flight (will end on August 29).
- August 19 - The radio comedy show Amos and Andy makes its debut starring Freeman Gosden and Charles Correll.
- August 23 - The 1929 Palestine riots of the Hebron, Safed, and Gaza Jewish communities got underway.
- September 5 - Aristide Briand presents his plan of the United States of Europe.
- September 7 - Steamboat Kuru sinks in Näsijärvi, Tampere, Finland claiming 136 lives.
- September 17 - Coup ousts Augustinas Voldemaras in Lithuania; new president is Antanas Smetona
- October 22 - Government of Aristide Briand falls in France.
- October 24 - The start of the Black Thursday stock market crash on the New York Stock Exchange.
- November 1 Annual Solar Eclipse of 1929 Nov 01.
- November - Vladimir Zworykin takes out the first patent for color television.
- November 7 - In New York City, the Museum of Modern Art opens to the public.
- November 15 - The Ambassador Bridge is opened to traffic.
- November 18 - 1929 Grand Banks earthquake: Off the south coast of Newfoundland in the Atlantic Ocean, a Richter magnitude 7.2 submarine earthquake centered on Grand Banks, breaks 12 submarine transatlantic telegraph cables and triggers a tsunami that destroys many south coast communities in the Burin Peninsula area, killing 28.
- November 29 - Floyd Bennett, US Admiral Richard Byrd, Captain Ashley McKinley, and Harold June, become the first to fly over the South Pole.
- December 2 - First Lightpoles in London
- December 3 - Great Depression: US President Herbert Hoover announces to U.S. Congress that the worst effects of the recent stock market crash are behind the nation and the American people have regained faith in the economy.
- December 29 - All India Congress in Lahore demands Indian independence
- January 25 - Robert Faurisson, French Holocaust revisionist
- June 12 - Robert Shelton, Ku Klux Klan Imperial Wizard (d. 2003)
- October 21 - John Kasper - NSRP presidential candidate and segregation activist (d. 1998)
- November 13 - Fred Phelps, American extremist minister (d. 2014)