1920s
Centuries: 19th century - 20th century - 21st century
Decades: 1870s 1880s 1890s 1900s 1910s - 1920s - 1930s 1940s 1950s 1960s 1970s
Years: 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929
Events and trends
Technology
- John Logie Baird invents the first working television system. (1925)
- Charles Lindbergh becomes the first person to fly solo non-stop across the Atlantic Ocean (20 May-21 May 1927)
- Penicillin is discovered by Sir Alexander Fleming. (1928)
Science
- Great advances in quantum mechanics
- Wave mechanics and the Schrödinger equation
- Werner Heisenberg formulates the uncertainty principle
- Paul Dirac's unification of quantum mechanics with special relativity
War, peace and politics
- Rise of communism after World War I
- The Red Scare
- Irish Civil War
- Southern Ireland gains independence from the United Kingdom in 1922
- Turkish War of Independence
- Polish-Soviet war
- First Labour Government of Ramsay MacDonald formed in the United Kingdom
- Kellogg-Briand Pact to end war
Economics
- Economic boom ended by "Black Thursday" (October 24, 1929); the stock market crashes, leading to the Great Depression
Culture, religion
- Youth culture of The Lost Generation; Flappers, Charleston, Bobbed Hair
- Prohibition — legal attempt to end consumption of alcohol in the USA
- "The Jazz Age" — Jazz and jazz-influenced dance music widely popular
- Rise of broadcast radio as an entertainment medium
- Start of commercially viable "Talking Pictures" (motion pictures with sound tracks)
- Beginning of surrealist movement
- Beginning of the Art Deco movement
Others
World leaders
- Prime Minister William Lyon Mackenzie King (Canada)
- President Sun Yat-sen (Republic of China)
- President Chiang Kai-shek (Republic of China)
- President Paul von Hindenburg (Germany)
- King Victor Emmanuel III (Italy)
- Prime Minister Benito Mussolini (Italy)
- President W.T. Cosgrave (Irish Free State)
- President Mustafa Kemal (Turkey)
- Emperor Hirohito (Japan)
- Pope Pius XI
- Vladimir Lenin (Soviet Union)
- Joseph Stalin (Soviet Union)
- King George V (United Kingdom)
- Prime Minister David Lloyd George (United Kingdom)
- Prime Minister Andrew Bonar Law (United Kingdom)
- Prime Minister Stanley Baldwin (United Kingdom)
- Prime Minister Ramsay MacDonald (United Kingdom)
- President Woodrow Wilson (United States)
- President Warren G. Harding (United States)
- President Calvin Coolidge (United States)
Entertainers
- Charlie Chaplin
- George Gershwin
- Duke Ellington
- Fletcher Henderson
- Al Jolson
- Jelly Roll Morton
- Cole Porter
- Bessie Smith
- Rudy Vallee
- Paul Whiteman
Sports figures
- Babe Ruth (U.S. baseball player)
- Gordon Coventry (Australian. Australian Rules Football player)
bg:1920-те
cy:1920au
da:1920'erne
de:1920er
et:1920. aastad
es:Años 1920
fr:Années 1920
it:Anni 1920
nl:1920-30
ja:1920年代
no:1920-årene
pl:Lata 20. XX wieku
ro:Anii 1920
simple:1920s
sl:1920.
fi:1920-luku
sv:1920-talet
zh:1920年代