1921

Year 1921 () was a (link will display full 1921 calendar) of the  calendar.

January

 * - In, the defeats  28-0 in the.
 * The first religious broadcast is heard over station ( in ).
 * The Spanish liner  sinks off Villa Garcia; 244 die.
 * in San Francisco opens.
 * - The   sinks in the  with all 56 hands on board.
 * The is founded in.
 * Women are allowed to vote in Sweden.
 * The is founded in.
 * Women are allowed to vote in Sweden.

February

 * - The is occupied by  during the.
 * - The is formed in.
 * - n sailors.

March

 * - The city, located in , , is founded.
 * - is inaugurated as the 29th.
 * - The is founded.
 * Spanish Premier is assassinated while exiting the parliament building in.
 * Allied forces occupy, Rurhort and.
 * - The Russian White Army captures from .   declares himself ruler.
 * The crushes the, and a number of sailors flee to Finland.
 * opens the first clinic in,.
 * The adopts the.
 * - The second ends the . The permanent border is established between the Polish and Soviet states.
 * - A plebiscite in votes for re-annexation to.
 * - The second ends the . The permanent border is established between the Polish and Soviet states.
 * - A plebiscite in votes for re-annexation to.

April

 * - The is created, with  as emir.
 * - In Britain, labour unions for mining, railway and transportation workers call for a ; the government threatens to call in the army.
 * - The is founded.
 * - 's play ' is first produced on in English. A flop in its native Hungary when first presented there in 1909, the American production is critically acclaimed and becomes a modern classic, filmed more than once, and eclipsed only when  adapt it in 1945 into a hit musical, ', which becomes a stage classic in its own right.
 * - A in  supports joining to.

May

 * - - : The Poles in rise against the Germans.
 * - Only 13 spectators attend the soccer match between and, the lowest attendance in 's history.
 * - begins in.
 * - abolished in.
 * - - Violent anti-European riots occur in  and.
 * - The passes the, establishing national quotas on.
 * - Elections are held for the first time for the new Parliament.
 * - : The official death toll is 39, but recent investigations suggest the actual toll may be much higher.
 * - : The official death toll is 39, but recent investigations suggest the actual toll may be much higher.

June

 * - of 1921: A  in  kills 85 people.
 * - in London, is opened for traffic by  and

July

 * Official founding date for the Communist Party of China.
 * A coal strike ends in England.
 * - U.S. President signs a joint congressional resolution declaring an end to America's state of war with,  and.
 * - A new conservative government is formed in by.
 * The comes to an end when a truce is signed between the British Government and Irish forces.
 * The Red Army captures from the White Army and establishes the.
 * - A Massachusetts jury finds guilty of first degree murder following a widely-publicized trial.
 * - The first vaccination against  is given.
 * - : Spanish troops are dealt a crushing defeat at the against.
 * - The Irish Truce is declared in Britain.
 * - US President receives Princess Fatima of Afghanistan and.
 * - Researchers at the led by biochemist  announce the discovery of the hormone.
 * - becomes  of the.
 * - Researchers at the led by biochemist  announce the discovery of the hormone.
 * - becomes  of the.

August

 * August - The formally ends, declaring a peace with.
 * - Famous opera singer Enrico Caruso dies.
 * - The first radio baseball game is broadcast; Harold Arlin announces the Pirates-Phillies game from Forbes Field over Westinghouse KDKA, in Pittsburgh.
 * - 35 degrees Celsius in - heat wave continues elsewhere in Europe as well.
 * - King is crowned in.
 * - explodes during a test flight near, ; 41 are dead.
 * Rising prices cause riots in.
 * The assassination of German politician causes the government to declare martial law.
 * The assassination of German politician causes the government to declare martial law.

September

 * - Poplar Strike in London: Nine members of the  are arrested.
 * - In, the first  is held.
 * - Sixteen-year-old wins the Atlantic City Pageant's Golden Mermaid trophy; pageant officials later dub her the first.
 * - Death of a and a famous,  by a sick elephant in a temple.
 * - is founded in.
 * - The occurs at 's  factory in Oppau, ; 500—600 dead.

October

 * - The first is staged in.
 * - Teaching at the starts in.
 * - A massacre in claims the lives of Portuguese Prime Minister  and other politicians.
 * - A peace conference between Ireland and the United Kingdom begins in London.
 * - The Spanish Army defeats the rifkabyls.
 * Construction of the, a part of the , is completed.
 * 's football team, led by quarterback, defeats 6-0 to snap Harvard's five-year winning streak.  For decades afterward, this is called "football's upset of the century."
 * 's football team, led by quarterback, defeats 6-0 to snap Harvard's five-year winning streak.  For decades afterward, this is called "football's upset of the century."

November-December

 * - Riots in injure most of the small police force.
 * - During an ceremony at, the  is dedicated by U.S. President.
 * - The is founded.
 * - The (PNF), National Fascist Party, comes into existence in.
 * - Rising prices cause riots in.
 * The establishing the, an independent nation incorporating 26 of Ireland's 32 counties, is signed in . See.
 * becomes the first woman to be elected to the Canadian Parliament.
 * - In the Four Power Treaty on Insular Possessions,, the , , and agree to recognize the status quo in the Pacific.
 * - is inaugurated.
 * - becomes 's tenth.
 * - becomes 's tenth.

Undated

 * becomes an autonomous republic within the.
 * Beginning of regular radio broadcasting service in.
 * , the 'father of broadcasting' in Ceylon, arrives in Colombo to take up his post as Chief Engineer of the Ceylon Telegraph Department.
 * Invention of the in its original form.
 * Jewish is founded in,.

Ongoing

 * in :

January-February

 * , Swiss writer (d. )
 * (d. )
 * , Canadian broadcaster and playwright (d. )
 * -, American race car driver (d. )
 * -, American libertarian socialist (d. )
 * -, American author (d. )
 * -, American actress (d. )
 * , American actress
 * , American tenor and actor (d. )
 * , American feminist (d. )
 * , (d. )
 * -, English conductor (d. )
 * -, the widow of
 * -, American politician (d. )
 * -, American game show host and journalist
 * -, American actress and dancer (d. )
 * -, American professional wrestler (d. )
 * -, American literary critic (d. )
 * -, American actor
 * -, Canadian statesman (assassinated) (d. )
 * -, American actress (d. )
 * -, French World War II pilot (d. )
 * -, American literary critic (d. )
 * -, American actor
 * -, Canadian statesman (assassinated) (d. )
 * -, American actress (d. )
 * -, French World War II pilot (d. )

March-April

 * , British film director (d. )
 * , American Catholic archbishop (d. )
 * , American poet
 * -, English composer (d. )
 * -, French writer (d. )
 * , Egyptian-born U.S. composer, performer, ethnomusicologist and educator
 * , British actress and director (d. )
 * , Guyanese writer
 * -, Czech player (d. )
 * , American actress and dancer
 * , American actor (d. )
 * -, American mathematician (d. )
 * , Italian auto executive (d. )
 * , American singer and actor (d. )
 * , American cartoonist
 * , English cricketer (d. )
 * -, American singer (d. )
 * -, Belgian violinist (d. )
 * -, French actress (d. )
 * -, English actor (d. )
 * -, American boxer (d. )
 * -, Italian opera singer (d. )
 * -, American actor and singer (d. )
 * -, American economist, laureate
 * -, Soviet cosmonaut (d. )
 * -, English actor and director (d. )
 * -, Actress
 * -, American actor and singer (d. )
 * -, American economist, laureate
 * -, Soviet cosmonaut (d. )
 * -, English actor and director (d. )
 * -, Actress
 * -, Actress


 * , baseball player (d. )
 * , American actress (d. )
 * -, Dutch painter (d. )

May-June

 * -, Indian filmmaker (d. )
 * -, American physicist, laureate (d. )
 * -, Austrian author (d. )
 * , resistance fighter in Nazi Germany (d. )
 * , American poet (d. )
 * -, German politician
 * , German artist (d. )
 * , Canadian writer and naturalist
 * -, English French horn player (d. )
 * - Sir, British medical researcher
 * -, Dutch writer (d. )
 * , German writer (d. )
 * , baseball player (d. )
 * , Indian philosopher author of socio-economical theory (d. )
 * , Russian physicist and activist, recipient of the (declined) (d. )
 * , American science fiction author (d. )
 * , British jazz musician and radio personality
 * , German-born physicist, laureate
 * , American newspaper publisher (d. )
 * -, English footballer (d. )
 * -, German author (d. )
 * -, American bandleader (d. )
 * -, Australian athlete
 * -, Canadian actress (d. )
 * -, British writer (d. )
 * -, American jazz musician (d. )
 * -, Canadian ballet dancer (d. )
 * -, French World War II heroine (d. )
 * -, (d. )
 * -, Canadian actress (d. )
 * -, British writer (d. )
 * -, American jazz musician (d. )
 * -, Canadian ballet dancer (d. )
 * -, French World War II heroine (d. )
 * -, (d. )
 * -, (d. )

July-August

 * , French economist, laureate (d. )
 * , Hungarian violinist and conductor (d. )
 * -, wife of U.S President
 * -, American designer (d. )
 * -, German actress (d. )
 * -, Austrian poltitician (d. )
 * , English children's author (d. )
 * , English chemist, laureate (d. )
 * -, American chemist, laureate (d. )
 * , Slovakian actor
 * , Hungarian World War II heroine (d. )
 * , American astronaut
 * , American psychiatrist
 * -, American physicist, recipient of the
 * -, U.S. Senator (d. )
 * -, American concert pianist (d. )
 * -, American Broadway composer
 * -, Canadian hockey player (d. )
 * -, Canadian physicist (d. )
 * - Governor of Nebraska and U.S. Senator (d. )
 * -, American musician,  (d. )
 * -, Polish art historian
 * -, American television producer (d. )
 * -, American economist, laureate
 * , Canadian actor and game show host
 * , Northern Irish-born writer (d. )
 * -, American television producer (d. )
 * -, American economist, laureate
 * , Canadian actor and game show host
 * , Northern Irish-born writer (d. )
 * , Northern Irish-born writer (d. )

September-October

 * -, English harpsichordist and conductor (d. )
 * -, Welsh entertainer (d. )
 * -, Polish science fiction writer (d. )
 * -, Argentinean actor (d. )
 * -, voice actress (d. )
 * -, American sportscaster
 * -, Scottish actress (d. )
 * -, (d. )
 * -, American football player
 * -, French singer and actor (d. )
 * -, Soviet gymnast (d. )
 * -, U.S. Senator from North Carolina
 * -, Swedish footballer (d. )
 * -, music composer (d. )
 * -, French singer-songwriter (d. )
 * - King
 * -, Daughter of and . (d. )

November-December

 * -, American actor (d. )
 * - Princess
 * -, American writer (d. )
 * -, English football manager (d. )
 * -, American actor (d. )
 * -, American actor and comedian (d. )
 * -, Italian singer and actor (d. )
 * -, Slovak politician and First Secretary of the Central Committee of the Communist Party of Czechoslovakia (d. )
 * -, American astrologer and mother of
 * -, American soprano
 * -, Hindu spiritual leader/saint of swaminarayan.
 * -, American football player (d. )
 * -, American actor, composer, comedian, and author (d. )
 * -, American writer and comic book creator

January - June

 * -, (b. )
 * , Russian anarchist (b. )
 * , English entertainer (b. )
 * -, Austrian economist (b. )
 * -, English cricketer (b. )
 * - King (b. )
 * -, 19th century player (b. )
 * -, English cricketer (b. )
 * -, Austrian writer and pacifist, recipient of the (b. )
 * -, French playwright (b. )
 * -, German classical historian (b. )
 * -, German classical historian (b. )

July - December

 * -, Italian tenor (b. )
 * -, French writer (b. )
 * -, English poet (b. )
 * -, English watercolour painter (b. )
 * -, Tamil poet (b. )
 * -, German composer (b. )
 * -, American gunfighter (b. )
 * -, Upright bass player (b. )
 * -, 19th (b. )
 * -, Swedish operatic soprano (b. )
 * -, Persian religious leader (b. )
 * -, Irish architect (b. )
 * -, French composer (b. )
 * -, U.S. Senator from Pennsylvania (b. )

Nobel prizes

 * - not awarded
 * - not awarded
 * - not awarded