1920

1920 (MCMXX) was a leap year starting on Thursday in the Gregorian calendar and a leap year starting on Wednesday in the Julian calendar.

 Events 
 The King of Spain blesses the Real Madrid football team.
 August Krogh, Danish zoologist, won the 1920 Nobel Prize in Physiology or Medicine

 Births 

 January 
 January 2 – Isaac Asimov, Russian-born American science fiction writer (d. 1992)
 January 5 - Arturo Benedetti Michelangeli, Italian pianist (d. 1995)
 January 6 – John Maynard Smith, British theoretical evolutionary biologist and geneticist (d. 2004)
 January 9 - Clive Dunn, British actor, comedian, and singer (d. 2012)
 January 19 - Roberto M. Levingston, 36th President of Argentina (d. 2015)
 January 19 – Javier Pérez de Cuéllar, Secretary-General of the United Nations (d. 2020)
 January 20 – Federico Fellini, Italian movie director (d. 1993)
 January 20 – DeForest Kelley, American actor (d. 1999)
 January 22 – Alf Ramsey, English football manager (d. 1999)
 January 23 – Gottfried Böhm, German architect and sculptor (d. 2021)

 February 
 February 11 – King Farouk of Egypt (d. 1965)
 February 26 – Tony Randall, American actor (d. 2004)
 February 29 – Michèle Morgan, French actress (d. 2016)

 March 
 March 11 – Nicolaas Bloembergen, Dutch-born American physicist (d. 2017)
 March 17 – Sheikh Mujibur Rahman, President of Bangladesh (d. 1975)

 April 
 April 1 – Toshiro Mifune, Japanese actor (d. 1997)
 April 5 – Chatichai Choonhavan, Prime Minister of Thailand (d. 1998)
 April 6 – Edmond H. Fischer, American biochemist and Nobel Prize winner (d. 2021)
 April 11 - Emilio Colombo, 40th Prime Minister of Italy (d. 2013)
 April 13 – Liam Cosgrave, Taoiseach (d. 2017)
 April 15 – Richard von Weizsäcker, former President of Germany (d. 2015)

 May 
 May 18 – Pope John Paul II (d. 2005)
 May 26 – Peggy Lee, American singer and actress (d. 2002)

 June 
 June 10 – Ruth Graham, American poet, wife of Billy Graham (d. 2007)
 June 11 – King Mahendra of Nepal (d. 1972)
 June 16 – José López Portillo, 51st President of Mexico (d. 2004)
 June 18 – Mario Beccaria, Italian politician (d. 2003)

 July 
 July 11 – Yul Brynner, Russian-American actor (d. 1985)
 July 17 – Juan Antonio Samaranch, 7th President of the International Olympic Committee (d. 2010)
 July 25 – Rosalind Franklin, British chemist, biophysicist, and X-ray crystallographer (d. 1958)

 August 
 August 17 – Maureen O'Hara, Irish-American film actress and singer (d. 2015)
 August 18 - Shelley Winters, American actress (d. 2006)
 August 22 – Ray Bradbury, American writer (d. 2012)
 August 26 – Prem Tinsulanonda, Thai politician, 16th Prime Minister of Thailand (d. 2019)

 September 
 September 23 - Mickey Rooney, American actor (d. 2014)

 October 
 October 1 – Walter Matthau, American actor (d. 2000)
 October 17 – Montgomery Clift, American actor (d. 1966)
 October 22 – Timothy Leary, American psychologist (d. 1996)
 October 31 – Melina Mercouri, Greek singer, actress and politician (d. 1994)

 November 
 November 8 – Esther Rolle, American actress, known for role in Good Times and Maude (d.1998)
 November 19 – Gene Tierney, American actress (d. 1991)
 November 21 - Stan Musial, American baseball player (d. 2013)

 December 
 December 9 – Carlo Azeglio Ciampi, 10th President of Italy (d. 2016)
 December 13 – Kaysone Phomvihane, President of Laos (d. 1992)

 Deaths 
 January 2 – Paul Adam, French writer (b. 1862)
 January 3 – Zygmunt Janiszewski, Polish mathematician (b. 1888)
 January 4 – Benito Pérez Galdós, Spanish novelist (b. 1843)
 January 6 – Hieronymus Georg Zeuthen, Danish mathematician (b. 1839)
 January 7 – Edmund Barton, Prime Minister of Australia (b. 1849)
 January 18 – Giovanni Capurro, Italian poet (b. 1825)
 January 24 – William Percy French, Irish songwriter and entertainer (b. 1854)
 January 24 – Amedeo Modigliani, Italian painter and sculptor (tuberculosis) (b. 1884)
 January 24 – William Plunket, 5th Baron Plunket, British diplomat and administrator (b. 1864)
 January 26 – Jeanne Hébuterne, French artist, model, and common-law wife of Amedeo Modigliani (suicide) (b. 1898)
 February 2 – Field E. Kindley, American World War I aviator (b. 1896)
 February 3 – Frank Brown, Governor of Maryland (b. 1846)
 February 6 – Augustus F. Goodridge, Canadian merchant and politician (b. 1839)
 February 7 – Aleksandr Kolchak, Russian naval commander (b. 1874)
 February 15 – Joseph Burton Sumner, founder of Sumner, Mississippi (b. 1837)
 February 20 – Joseph J. Fern, Mayor of Honolulu (b. 1872)
 February 20 – Robert Peary, American Arctic explorer (b. 1856)
 February 27 – William Sherman Jennings, Governor of Florida (b. 1863)
 March 1 – John H. Bankhead, U.S. Senator from Alabama (b. 1842)
 March 1 – William A. Stone, Governor of Pennsylvania (b. 1846)
 March 1 – Joseph Trumpeldor, Russian Zionist (b. 1880)
 March 4 – Roswell P. Bishop, U.S. Congressman from Michigan (b. 1843)
 March 11 – Julio Garavito Armero, Colombian astronomer (b. 1865)
 March 13 – Charles Lapworth, English geologist (b. 1842)
 March 26 – William Chester Minor, American surgeon (b. 1834)
 March 26 – Mary Augusta Ward, Tasmanian novelist (b. 1851)
 March 31 – Paul Bachmann, German mathematician (b. 1837)
 March 31 – Edwin Warfield, Governor of Maryland (b. 1848)
 April 8 – John Brashear, American astronomer (b. 1840)
 April 8 – Charles Tomlinson Griffes, American composer (b. 1884)
 April 9 – Moritz Cantor, German historian of mathematics (b. 1829)
 April 21 – Maria L. Sanford, American educator (b. 1836)
 April 26 – Srinivasa Ramanujan, Indian mathematician (b. 1887)
 May 1 – Princess Margaret of Connaught, Crown Princess of Sweden (b. 1882)
 May 9 – Agnes Macdonald, wife of John A. Macdonald, Prime Minister of Canada (b. 1836)
 May 11 – James Colosimo, Italian-born gangster (b. 1877)
 May 11 – William Dean Howells, American writer (b. 1837)
 May 16 – Levi P. Morton, Vice President of the United States (b. 1824)
 May 21 – Venustiano Carranza, President of Mexico (b. 1859)
 May 21 – Eleanor H. Porter, American novelist (b. 1868)
 May 23 – Svetozar Borojevic, Austro-Hungarian field marshal (b. 1856)
 May 30 – George Ernest Morrison, Australian adventurer (b. 1862)
 June 5 – Rhoda Broughton, Welsh writer (b. 1840)
 June 5 – Julia A. Moore, American poet (b. 1847)
 June 6 – James Dunsmuir, Canadian politician (b. 1851)
 June 13 – Essad Pasha, Prime Minister of Albania (b. 1863)
 June 14 – Gabrielle Réjane, French actress (b. 1856)
 June 14 – Max Weber, German political economist (b. 1864)
 June 18 – Jewett W. Adams, Governor of Nevada (b. 1835)
 June 18 – John Macoun, Irish born naturalist (b. 1831)
 June 20 – Marie Adolphe Carnot, French chemist, mining engineer, and politician (b. 1839)
 June 20 – John Grigg, New Zealand astronomer (b. 1838)
 June 27 – Adolphe Basile Routhier, Canadian poet (b. 1839)
 July 1 – Delfim Moreira, President of Brazil (b. 1868)
 July 10 – John Fisher, 1st Baron Fisher, British admiral (b. 1841)
 July 11 – Empress Eugénie of France (b. 1826)
 July 14 – Albert Keller, German painter (b. 1844)
 July 22 – William Kissam Vanderbilt, American heir (b. 1849)
 August 1 – Frank Hanly, Governor of Indiana (b. 1863)
 August 1 – Bal Gangadhar Tilak, Indian nationalist (b. 1856)
 August 2 – Ormer Locklear, American pilot (b. 1891)
 August 9 – Samuel Griffith, Australian politician and judge (b. 1845)
 August 10 – Adam Politzer, Austrian otologist (b. 1835)
 August 12 – Hermann Struve, Russian-born astronomer (b. 1854)
 August 16 – Henry Daglish, Premier of Australia (b. 1866)
 August 16 – Joseph Norman Lockyer, English astronomer (b. 1836)
 August 17 – Ray Chapman, baseball player (b. 1891)
 August 22 – Anders Zorn, Swedish painter (b. 1860)
 August 26 – James Wilson, Scottish-born American politician (b. 1835)
 August 31 – Wilhelm Wundt, German physiologist and psychologist (b. 1832)
 September 7 – Simon-Napoléon Parent, Premier of Quebec (b. 1855)
 September 10 – Olive Thomas, American actress (b. 1894)
 September 18 – Robert Beaven, Canadian politician (b. 1836)
 September 24 – Peter Carl Fabergé, Russian jeweler (b. 1846)
 September 25 – Jacob Schiff, German-born banker and philanthropist (b. 1847)
 September 30 – William Wilfred Sullivan, Canadian journalist, politician, and jurist (b. 1843)
 October 2 – Winthrop M. Crane, Governor of Massachusetts and Senator (b. 1853)
 October 10 – Hudson Stuck, English mountaineer (b. 1865)
 October 19 – John Reed, American journalist (b. 1887)
 October 20 – Max Bruch, German composer (b. 1838)
 October 24 – Grand Duchess Marie Alexandrovna of Russia (b. 1853)
 November 4 – Ludwig Struve, Russian astronomer (b. 1858)
 November 13 – Luc-Olivier Merson, French painter and illustrator (b. 1846)
 November 23 – George Callaghan, British admiral (b. 1852)
 November 25 – Gaston Chevrolet, Swiss-born automobile race driver and manufacturer (b. 1892)
 November 30 – Eugene W. Chafin, American politician (b. 1852)
 December 3 – William de Wiveleslie Abney, English astronomer and photographer (b. 1843)
 December 11 – Olive Schreiner, South African writer (b. 1855)
 December 12 – Edward Gawler Prior, Canadian mining engineer and politician (b. 1854)
 December 14 – George Gipp, American football player (b. 1895)

 Art, music, theatre, literature 
 The Cabinet of Doctor Caligari is released.