Year 1921 (MCMXXI) was a common year starting on Saturday (link will display full calendar) of the Gregorian calendar and a common year starting on Friday of the Julian calendar.

Events

January

• January 1 – In American football, the University of California defeats Ohio State 28 0 in the Rose Bowl.
• January 2
  • The football club Cruzeiro Esporte Clube from Belo Horizonte is founded as Palestra Italia in Brazil.
  • The first religious radio broadcast is heard over station KDKA AM in Pittsburgh, Pennsylvania.
  • The Spanish liner Santa Isabel sinks off Villa Garcia; 244 die.
  • The DeYoung Museum opens in Golden Gate Park, San Francisco.
• January 20 – The British K class submarine HMS K5 sinks in the English Channel with the loss of all 56 hands on board.
• January 21
  • The Italian Communist Party is founded in Livorno.
  • Women's suffrage is attained in Sweden.
• January 25 – The Italian battleship Leonardo da Vinci is righted in Taranto Harbour.

February

• February 12 – The Democratic Republic of Georgia is invaded by Bolshevist Russia.
• February 21 – Rez Khan and Seyyed Zia'eddin Tabatabaee stage a coup d' tat in Iran.
• February 25 – The Red Army enters Georgian capital Tbilisi and installs a Moscow-directed communist government.
• February 27 – The International Working Union of Socialist Parties is formed in Vienna.
• February 28 – Russian sailors rebel in Kronstadt

March

• March 1 – The city of Kiry , located in Gunma, Japan, is founded.
• March 4 – Warren G. Harding is inaugurated as the 29th President of the United States.
• March 5 – Clonbanin Ambush: Irish Republican Army kills Brigadier-General Cumming.
• March 6 – The Portuguese Communist Party is founded.
• March 8
  • Spanish Premier Eduardo Dato Iradier is assassinated while exiting the parliament building in Madrid.
  • Allied forces occupy D sseldorf, Ruhrort and Duisburg.
• March 12 – The stikl l Mar (Independence March), the Turkish National Anthem, is officially adopted.
• March 13 – The Russian White Army captures Mongolia from China. Roman Ungern von Sternberg declares himself ruler.
• March 14 – Armenian Soghomon Tehlirian assassinates Mehmed Talaat, former Interior Minister of Turkey, in Charlottenburg, Berlin.
• March 17
  • The Red Army crushes the Kronstadt rebellion, and a number of sailors flee to Finland.
  • Marie Stopes opens the first birth control clinic in London, England.
  • The Second Republic of Poland adopts the March Constitution.
• March 18 – The second Peace of Riga ends the Polish-Soviet War. A permanent border is established between the Polish and Soviet states.
• March 21
  • New Economic Policy starts in the Soviet Russia.
  • Headford Ambush: Irish Republican Army kills at least nine British troops.
• March 23 – A plebiscite in Silesia votes for re-annexation to Germany.

April

• April – The United States Figure Skating Association is formed.
• April 11 – The Emirate of Transjordan is created, with Abdullah I as emir.
• April 14 – In Britain, labour unions for mining, railway and transportation workers call for a strike; the government threatens to call in the army.
• April 20 – Ferenc Moln r's play Liliom is first produced on Broadway in English.
• April 27 – The Allies of World War I reparations commission announce that Germany has to pay 132 billion gold marks ($33 trillion) in annual installments of 2.5 billion.

May

• May 1–May 7 – Riots at Jaffa (Mandatory Palestine) result in 47 Jewish and 48 Arab deaths.
• May 2–July 5 – Third Silesian Uprising: The Poles in Upper Silesia rise against the Germans.
• May 3 – The province of Northern Ireland is created within the United Kingdom
• May 5 – Only thirteen spectators attend the soccer match between Leicester City and Stockport County, the lowest attendance in The Football League's history.
• May 16 – The Communist Party of Czechoslovakia is founded.
• May 14–May 17 – Violent anti-European riots occur in Cairo and Alexandria.
• May 14–May 15 – Major geomagnetic storm.
• May 19 – The Emergency Quota Act is passed by the U.S. Congress, establishing national quotas on immigration.
• May 23 – In Leipzig the Leipzig War Crimes Trial starts. It will end on July 16.
• May 24 – Elections are held for the first time for the new Northern Ireland Parliament.
• May 26 – A general strike begins in Norway.
• May 31 – Tulsa Race Riot: The official death toll is 39, but recent investigations suggest the actual toll may be much higher.

June

• June 21 – International Hydrographic Bureau (IHB) established as an agency of the League of Nations; continues in this form until April 19, 1946.
• June 28 – The Constitutional Assembly of the Kingdom of Serbs, Croats and Slovenes passes the Vidovdan Constitution, despite a boycott of the vote by the communists, and Croat and Slovene parties.
• June 30 – The death penalty is abolished in Sweden.

July

• July 1
  • The Communist Party of China is officially founded.
  • A coal strike ends in England.
• July 2 – U.S. President Warren Harding signs a joint congressional resolution declaring an end to America's state of war with Germany, Austria and Hungary.
• July 4 – A new conservative government is formed in Italy by Ivanoe Bonomi.
• July 11
  • The Irish War of Independence comes to an end when a truce is signed between the British Government and Irish forces.
  • The Red Army captures Mongolia from the White Army and establishes the Mongolian People's Republic.
• July 14 – A Massachusetts jury finds Nicola Sacco and Bartolomeo Vanzetti guilty of first degree murder following a widely publicized trial.
• July 17 – The Republic of Mirdita is proclaimed near the Albanian-Serbian border with Yugoslav support.
• July 18 – The first BCG vaccination against tuberculosis is given.
• July 21 – Rif War – Battle of Annual: Spanish troops are dealt a crushing defeat at the hands of Muhammad Ibn 'Abd al-Karim al-Khattabi.
• July 22 – The Irish Truce is declared in Britain.
• July 26 – U.S. President Warren G. Harding receives Princess Fatima of Afghanistan and Stanley Clifford Weyman.
• July 27 – Researchers at the University of Toronto led by biochemist Frederick Banting announce the discovery of the hormone insulin.
• July 29 – Adolf Hitler becomes F hrer of the Nazi Party.

August

• August – The United States formally ends World War I, declaring a peace with Germany.
• August 5 – The first radio baseball game is broadcast; Harold Arlin announces the Pirates-Phillies game from Forbes Field over Westinghouse KDKA, in Pittsburgh.
• August 11 – The temperature reaches 39 degrees Celsius in Breslau; the heat wave continues elsewhere in Europe as well.
• August 23 – King Faisal I of Iraq is crowned in Baghdad.
• August 24 – R38 class airship ZR-2 explodes on her fourth test flight near Kingston upon Hull, England, killing 44 of the 49 Anglo-American crew onboard.^[1]
• August 26
  • Rising prices cause major riots in Munich.
  • The assassination of German politician Matthias Erzberger causes the government to declare martial law.

September

• September 1 – Poplar Strike in London: Nine members of the Poplar borough council are arrested.
• September 7 – In Atlantic City, New Jersey, the first Miss America Pageant is held.
• September 8 – Sixteen-year-old Margaret Gorman wins the Atlantic City Pageant's Golden Mermaid trophy; pageant officials later dub her the first Miss America.
• September 12 – The Lotta Sv rd women's paramilitary auxiliary is founded in Finland.
• September 21 – The Oppau explosion occurs at BASF's nitrate factory in Oppau, Germany; 500 600 are killed.

October

• October 5 – The first radio broadcast of a World Series baseball game was aired by Newark, NJ station WJZ; Pittsburgh, PA station KDKA, and a group of other commercial and amateur stations throughout the eastern United States.
• October 8 – The first Sweetest Day is staged in Cleveland, Ohio.
• October 10 – Teaching at the University of Szeged starts in Hungary.
• October 19 – A massacre in Lisbon claims the lives of Portuguese Prime-Minister Ant nio Granjo and other politicians.
• October 21 – A peace conference between Ireland and the United Kingdom begins in London.
• October 24 – The Spanish Army defeats the rifkabyls.
• October 29
  • Construction of the Link River Dam, a part of the Klamath Reclamation Project, is completed.
  • Centre College's football team, led by quarterback Bo McMillin, defeats Harvard University 6 0 to break Harvard's five-year winning streak. For decades afterward, this is called "football's upset of the century."

November

• November 9
  • Riots in Reykjav k injure most of the small police force.
  • Albert Einstein is awarded the Nobel Prize in Physics for his work with the photoelectric effect.
  • The Partito Nazionale Fascista (PNF), National Fascist Party, is founded in Italy.
• November 11 – During an Armistice Day ceremony at Arlington National Cemetery, the Tomb of the Unknowns is dedicated by U.S. President Warren G. Harding.
• November 14 – The Spanish Communist Party is founded.

Undated

• Hyperinflation is still rampant in Germany, where 263 marks are now needed to buy a single American dollar - more than 20 times greater than the 12 marks needed in April 1919.^[2]

December

• December 1 – Rising prices cause riots in Vienna.
• December 6
  • The Anglo-Irish Treaty establishing the Irish Free State, an independent nation incorporating 26 of Ireland's 32 counties, is signed in London.
  • Agnes Macphail becomes the first woman to be elected to the Canadian Parliament.
• December 13 – In the Four Power Treaty on Insular Possessions, Japan, the United States, United Kingdom, and France agree to recognize the status quo in the Pacific.
• December 23 – Visva-Bharati University is inaugurated in India.
• December 29 – William Lyon Mackenzie King becomes Canada's tenth prime minister.

Date unknown

• Abkhazia becomes an autonomous republic within the Soviet Union.
• Russian famine: 5 million die.
• Regular radio broadcasting services begin in Italy.
• Edward Harper, the 'father of broadcasting' in Ceylon, arrives in Colombo to take up his post as Chief Engineer of the Ceylon Telegraph Department.
• The vibraphone in its original form is invented.
• The Sauerl nder Heimatbund is founded in Meschede, Germany.
• Jewish immigration to Palestine grows rapidly. Before Jews preferred the USA but the USA drastically limited immigration from Eastern Europe.
• E.W. Scripps founds Science Service, later renamed Society for Science & the Public, with the goal of keeping the public informed of scientific achievements.
• Weimar Republic makes its first payment of reparations.

Births

January–February

• January 1
  • C sar Baldaccini, French sculptor. (died 1998)
  • Doris Tetzlaff, American female professional baseball player (died 1998)
  • Patricia Robins (alias Claire Lorrimer), British writer.
• January 5
  • Friedrich D rrenmatt, Swiss writer (died 1990)
  • Jean, Grand Duke of Luxembourg
• January 9
  • Fraser Barron, New Zealand bomber pilot during WWII (died 1944)
  • Lister Sinclair, Canadian broadcaster and playwright (died 2006)
• January 10 – Rodger Ward, American race car driver (died 2004)
• January 14 – Murray Bookchin, American libertarian socialist (died 2006)
• January 19 – Patricia Highsmith, American author (died 1995)
• January 21 – Howard Unruh, American spree killer (died 2009)
• January 27 – Donna Reed, American actress (died 1986)
• January 31
  • Carol Channing, American actress
  • Mario Lanza, American tenor and actor (died 1959)
• February 1 – Peter Sallis, English actor (Last of the Summer Wine & Wallace and Gromit)
• February 4
  • Betty Friedan, American feminist (died 2006)
  • K. R. Narayanan, President of India (died 2005)
• February 5 – John Pritchard, English conductor (died 1989)
• February 7 – Nexhmije Hoxha, widow of Enver Hoxha
• February 8 – Betsy Jochum, American female baseball player
• February 11 – Lloyd Bentsen, American politician (died 2006)
• February 14 – Hugh Downs, American game show host and journalist (20-20)
• February 16
  • Vera-Ellen, American actress and dancer (died 1981)
  • Hua Guofeng, former Premier of the People's Republic of China (died 2008)
• February 20 – Buddy Rogers, American professional wrestler (died 1992)
• February 22 – Wayne Booth, American literary critic (died 2005)
• February 24 – Abe Vigoda, American actor (Fish)
• February 25 – Pierre Laporte, Canadian statesman (died 1970)
• February 26 – Betty Hutton, American actress (died 2007)
• February 27 – Muriel Coben, Canadian professional baseball and curling player (died 1979)
• February 28 – Pierre Clostermann, French World War II pilot (died 2006)

March–April

• March 1
  • Jack Clayton, British film director (died 1995)
  • Terence Cooke, American cardinal archbishop (died 1983)
  • Richard Wilbur, American poet
• March 2 – Robert Simpson, English composer (died 1997)
• March 3
  • Paul Guimard, French writer (died 2004)
  • Diana Barrymore, American actress (died 1960)
• March 4
  • Halim El-Dabh, Egyptian-born U.S. composer, performer, ethnomusicologist and educator
  • Joan Greenwood, British actress and director (died 1987)
  • Wilson Harris, Guyanese writer
• March 5 – Elmer Valo, Czech Major League Baseball player (died 1998)
• March 8 – Alan Hale, Jr., American actor (Gilligan's Island) (died 1990)
• March 11 – Frank Harary, American mathematician (died 2005)
• March 12
  • Gianni Agnelli, Italian auto executive (died 2003)
  • Gordon MacRae, American singer and actor (died 1986)
• March 13
  • Al Jaffee, American cartoonist (MAD Magazine)
  • Cyril Poole, English cricketer (died 1996)
• March 14 – Lis Hartel, Danish equestrian athlete (died 2009)
• March 17 – Meir Amit, Israeli politician and general (died 2009)
• March 20 – Sister Rosetta Tharpe, American singer (died 1973)
• March 21 – Arthur Grumiaux, Belgian violinist (died 1986)
• March 24 – Vasily Smyslov, Soviet chess player (died 2010)
• March 25 – Simone Signoret, French actress (died 1985)
• March 28 – Dirk Bogarde, English actor (died 1999)
• April 1 – Beau Jack, American boxer (died 2000)
• April 3
  • Robert Karvelas, American actor (died 1991)
  • Jan Sterling, American actress (died 2004)
• April 8 – Franco Corelli, Italian opera singer (died 2003)
• April 9 – Frankie Thomas, American actor (died 2006)
• April 10
  • Sheb Wooley, American actor and singer (Flying Purple People Eater) (died 2003)
  • Chuck Connors, American actor, basketball and baseball player (The Rifleman) (died 1992)
• April 14 – Thomas Schelling, American economist, Nobel Prize laureate
• April 15 – Georgi Beregovoi, Soviet cosmonaut (died 1995)
• April 16 – Peter Ustinov, English actor and director (died 2004)
• April 21 – John Osteen, American televangelist (died 1999)
• April 22
  • Vivian Dandridge, African-American actress (died 1991)
• April 23
  • Warren Spahn, American baseball player (died 2003)
  • Janet Blair, American actress (died 2007)
• April 25 – Karel Appel, Dutch painter (died 2006)
• April 26 – Jimmy Giuffre, American jazz musician (died 2008)
• April 30
  • Dottie Green, American professional baseball player (died 1992)
  • Tove Ma s, Danish actress (died 2011)

May–June

• May 2 – Satyajit Ray, Indian filmmaker (died 1992)
• May 5 – Arthur Leonard Schawlow, American physicist, Nobel Prize laureate (died 1999)
• May 6 – Erich Fried, Austrian author (died 1988)
• May 9
  • Sophie Scholl, resistance fighter in Nazi Germany (died 1943)
  • Mona Van Duyn, American poet (died 2004)
• May 11 – Hildegard Hamm-Br cher, German politician
• May 12
  • Joseph Beuys, German artist (died 1986)
  • Farley Mowat, Canadian writer and naturalist
• May 14 – Richard Deacon, American actor, born in Philadelphia, PA (died 1984)
• May 16 – Harry Carey, Jr., American actor
• May 17 – Dennis Brain, English French horn player (died 1957)
• May 18
  • Bill Macy, American actor (Maude)
  • Sir Michael Epstein, British medical researcher
• May 19 – Karel van het Reve, Dutch writer (died 1999)
• May 20
  • Wolfgang Borchert, German writer (died 1947)
  • Hal Newhouser, baseball player (died 1998)
• May 21– Andrei Sakharov, Soviet physicist and human rights activist, recipient of the Nobel Peace Prize (declined) (died 1989)
  • Prabhat Ranjan Sarkar, Indian philosopher, author of the socio-economic "Progressive Utilization Theory" (died 1990)
• May 23
  • James Blish, American science fiction author (died 1975)
  • Humphrey Lyttelton, British jazz musician and radio personality (died 2008)
• May 25
  • Jack Steinberger, German-born physicist, Nobel Prize laureate
  • James C. Quayle, American newspaper publisher (died 2000)
• May 26 – Stan Mortensen, English footballer (died 1991)
• May 28 – Heinz G. Konsalik, German author (died 1999)
• June 1 – Nelson Riddle, American bandleader (died 1985)
• June 3
  • Forbes Carlile, Australian athlete
  • John Shelton Wilder, American politician, former Lieutenant Governor of Tennessee (died 2010)
• June 8
  • Alexis Smith, Canadian actress (died 1993)
  • Suharto, former President of Indonesia (died 2008)
• June 9 – Margaret Danhauser, American female professional baseball player (died 1987)
• June 10 – Prince Philip, Duke of Edinburgh, consort of Elizabeth II
• June 12 – Christopher Derrick, British writer (died 2007)
• June 13 – Nancy Warren, American female professional baseball player (died 2001)
• June 15 – Errol Garner, American jazz musician (died 1977)
• June 19 – Louis Jourdan, French actor
• June 21 – Jane Russell, American actress (died 2011)
• June 22 – Ralph K. Hofer, American fighter pilot (died 1942)
• June 25 – Celia Franca, Canadian ballet dancer (died 2007)
• June 26 – Violette Szabo, French World War II heroine (died 1945)
• June 28 – P. V. Narasimha Rao, Prime Minister of India (died 2004)

July–August

• July 3 – Levi Yitzchak Horowitz, Hasidic rebbe (died 2009)
• July 4
  • G rard Debreu, French economist, Nobel Prize laureate (died 2004)
  • Tibor Varga, Hungarian violinist and conductor (died 2003)
• July 6 – Nancy Davis Reagan, wife of U.S President Ronald Reagan
• July 10
  • Harvey Ball, American designer (died 2001)
  • Eunice Kennedy Shriver, member of the Kennedy family (died 2009)
• July 11 – Ilse Werner, German actress (died 2005)
• July 13 – Friedrich Peter, Austrian poltitician (died 2005)
• July 14
  • Leon Garfield, English children's author (died 1996)
  • Geoffrey Wilkinson, English chemist, Nobel Prize laureate (died 1996)
• July 15 – Robert Bruce Merrifield, American chemist, Nobel Prize laureate (died 2006)
• July 17
  • Franti ek Zvar k, Slovakian actor (died 2008)
  • Hannah Szenes, Hungarian World War II heroine (died 1944)
• July 18
  • Richard Leacock, Documentary filmmaker, Pioneer of Cin ma V rit (died 2011)
  • John Glenn, American astronaut and former U.S. Senator
  • Aaron T. Beck, American psychiatrist
• July 19 – Rosalyn Sussman Yalow, American physicist, recipient of the Nobel Prize in Physiology or Medicine (died 2011)
• July 22 – William Roth, U.S. Senator (died 2003)
• July 24 – Billy Taylor, American jazz musician (died 2010)
• July 30 – Grant Johannesen, American concert pianist (died 2005)
• August 3 – Richard Adler, American Broadway composer
• August 4 – Maurice Richard, Canadian hockey player (died 2000)
• August 8 – John Herbert Chapman, Canadian physicist (died 1979)
• August 9 – J. James Exon, Governor of Nebraska and U.S. Senator (died 2005)
• August 10 – Yuki Shimoda, American actor (died 1981)
• August 13 – Barney Liddell, American musician (The Lawrence Welk Show) (died 2003)
• August 18 – Zdzislaw Zygulski, Jr., Polish art historian
• August 19 – Gene Roddenberry, American television producer (Star Trek) (died 1991)
• August 23 – Kenneth Arrow, American economist, Nobel Prize laureate
• August 25
  • Monty Hall, Canadian actor and game show host (Let's Make A Deal)
  • Brian Moore, Northern Irish-born writer (died 1999)
• August 26 – Shimshon Amitsur, Israeli mathematician and Israel Prize recipient (died 1994)
• August 27 – Georg Alexander, Duke of Mecklenburg, head of the House of Mecklenburg-Strelitz (died 1996)
• August 28 – Lidia Gueiler Tejada, President of Bolivia (died 2011)

September October

• September 2 – Josephine Lenard, American professional baseball player (died 2007)
• September 3 – Thurston Dart, English harpsichordist and conductor (died 1971)
• September 8 – Harry Secombe, Welsh entertainer (died 2001)
• September 12 – Stanislaw Lem, Polish science fiction writer (died 2006)
• September 13 – Sergey Nepobedimiy, Soviet rocket weaponry designer
• September 14 – Dario Vittori, Argentine actor (died 2001)
• September 15 – Norma MacMillan, voice actress (died 2001)
• September 24
  • Jim McKay, American sportscaster (ABC's Wide World of Sports) (died 2008)
  • Charlene Pryer, American professional baseball player (died 1999)
• September 27 – Mikl s Jancs , Hungarian film director
• September 30 – Deborah Kerr, Scottish actress (died 2007)
• October 2 – Robert Runcie, Archbishop of Canterbury (died 2000)
• October 5 – Bill Willis, American football player (died 2007)
• October 7 – Tommy Farrell, American supporting actor and comedian (died 2004)
• October 8 – Abraham Sarmiento, Filipino Supreme Court jurist (died 2010)
• October 13
  • Yves Montand, French singer and actor (died 1991)
  • Enrico Cocozza, Scottish Filmaker (died 2009)
• October 14 – Thomaz Soares da Silva, Brazilian football player (died 2002)
• October 17 – Maria Gorokhovskaya, Soviet gymnast (died 2001)
• October 18 – Jesse Helms, U.S. Senator from North Carolina (died 2008)
• October 19
  • George Nader, American actor (died 2002)
  • Gunnar Nordahl, Swedish footballer (died 1995)
• October 21
  • Malcolm Arnold, British music composer (died 2006)
  • Sena Jurinac, Bosnian operatic soprano (died 2011)
• October 22 – Georges Brassens, French singer-songwriter (died 1981)
• October 25 – King Michael of Romania
• October 26 – Frances Scott Fitzgerald, daughter of F. Scott Fitzgerald and Zelda Sayre (died 1986)

November–December

• November 3 – Charles Bronson, American actor (died 2003)
• November 5 – Princess Fawzia of Egypt
• November 6 – James Jones, American writer (died 1977)
• November 8 – Gene Saks, American actor and film director
• November 10 – Owen Bush, American actor (died 2001)
• November 11
  • Ron Greenwood, English football manager (died 2006)
  • Molly Dodd, American actress (died 1981)
• November 14 – Brian Keith, American actor (Family Affair) (died 1997)
• November 17 – Albert Bertelsen, Danish artist
• November 20 – Dan Frazer, American actor (Kojak)
• November 22 – Rodney Dangerfield, American actor and comedian (died 2004)
• November 23 – Fred Buscaglione, Italian singer and actor (died 1960)
• November 27 – Alexander Dubcek, Slovak politician and First Secretary of the Central Committee of the Communist Party of Czechoslovakia (died 1992)
• November 29 – Jackie Stallone, American astrologer and mother of Sylvester Stallone
• December 3 – Phyllis Curtin, American soprano
• December 4 – Deanna Durbin, Canadian-American singer & actress
• December 5 – Alvy Moore, American actor (died 1997)
• December 6 – Otto Graham, American football player (died 2003)
• December 23 – Marge Callaghan, Canadian female professional baseball player
• December 26
  • Bla e Koneski, Macedonian poet and linguist (died 1993)
  • Steve Allen, American actor, composer, comedian, and author (died 2000)

Deaths

January–June

• January 1 – Theobald von Bethmann Hollweg, Chancellor of Germany (born 1856)
• February 2 – Antonio Jacobsen, maritime artist (born 1850)
• February 8
  • Peter Kropotkin, Russian anarchist (born 1842)
  • George Formby (Senior), English entertainer (born 1876)
• February 26 – Carl Menger, Austrian economist (born 1840)
• February 27 – Schofield Haigh, English cricketer (born 1871)
• March 1 – King Nicholas I of Montenegro (born 1841)
• March 29 – John Burroughs, American naturalist and essayist (born 1837)
• April 11 – Augusta Viktoria of Schleswig-Holstein, Last German Empress, wife of Wilhelm II (born 1858)
• April 17 – Manuel Dimech, Maltese philosopher and social reformer (born 1860)
• April 21 – Tom O'Brien, American major league baseball player (born 1860)
• April 27 – Arthur Mold, English cricketer (born 1863)
• May 5 – Alfred Hermann Fried, Austrian writer and pacifist, recipient of the Nobel Peace Prize (born 1864)
• May 19
  • Edward Douglass White, 9th Chief Justice of the United States (born 1845)
  • Michael Llewelyn-Davies, one of the 'Lost Boys' for the Peter Pan book (born 1900)
• June 5 – Georges Feydeau, French playwright (born 1862)
• June 28 – Gjorche Petrov, Macedonian and Bulgarian revolutionary
• June 29
  • Lady Randolph Churchill, mother of Winston Churchill (born 1854)
  • Otto Seeck, German classical historian (born 1850)

July–December

• August 2 – Enrico Caruso, Italian tenor (born 1873)
• August 7 – Aleksandr Blok, Russian poet (born 1880)
• August 8 – Juhani Aho, Finnish author and journalist (born 1861)
• August 16 – Peter I of Serbs, Croats and Slovenes, King of Yugoslavia (born 1844)
• August 19 – Georges Darien, French writer (born 1862)
• September 2 – Henry Austin Dobson, English poet (born 1840)
• September 7 – Alfred William Rich, English watercolour painter (born 1856)
• September 9 – Virginia Rappe, American model and actress (born 1895)
• September 11 – Subramanya Bharathy, Tamil poet (born 1882)
• September 27 – Engelbert Humperdinck, German composer (born 1854)
• October 12 – Philander C. Knox, American politician (born 1853)
• October 18 – Ludwig III of Bavaria, last king of Bavaria (born 1845)
• October 25 – Bat Masterson, American gunfighter (born 1853)
• November 4 – Hara Takashi, 19th Prime Minister of Japan (born 1856)
• November 14 – Isabel, Princess Imperial of Brazil, daughter of Emperor Pedro II of Brazil (born 1846)
• November 20 – Christina Nilsson, Swedish operatic soprano (born 1843)
• November 27 – Douglas Colin Cameron, Canadian politician (born 1854)
• November 28 – `Abdu'l-Bah , Persian religious leader (born 1844)
• December 10 – George Ashlin, Irish architect (born 1837)
• December 16 – Camille Saint-Sa ns, French composer (born 1835)
• December 31 – Boies Penrose, U.S. Senator from Pennsylvania (born 1860)

Nobel Prizes

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• Physics – Albert Einstein
• Chemistry – Frederick Soddy
• Medicine – not awarded
• Literature – Anatole France
• Peace – Karl Hjalmar Branting, Christian Lous Lange

References

• New International Year Book: 1921 (1922) online edition
• 1921 Aviation Comes North- NWT Historical Timeline- A Prince of Wales Northern Heritage Centre Online Exhibit

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