( Rossum's Universal Robots ) ( 1921 ) – the play that introduced the word robot to the world – were organic artificial humans, the word " robot " has come to primarily refer to mechanical humans, animals, and other beings.

* 1921 – Robert Cliche, Canadian politician and magistrate ( d. 1978 )

* 1921 – Black Friday: mine owners announce more wage and price cuts, leading to the threat of a strike all across England.

* 1921 – Tove Maës, Danish actress ( d. 2011 )

* 1921 – The British install the son of Sharif Hussein bin Ali ( leader of the Arab Revolt of 1916 against the Ottoman Empire ) as King Faisal I of Iraq.

* 1921 – Georg Alexander, Duke of Mecklenburg ( d. 1996 )

* 1921 – Leo Penn, American director ( d. 1998 )

* 1921 – Ernest Angley, American evangelist and broadcaster

* 1921 – J. James Exon, American politician ( d. 2005 )

They won the first eight matches in succession including a 5 – 0 whitewash in 1920 – 1921 at the hands of Warwick Armstrong's team.

* 2008 – Jake Warren, Canadian diplomat ( b. 1921 )

* 2012 – N. K. P. Salve, Indian politician ( b. 1921 )

The most important Canadian theorist was an American immigrant, Henry Wise Wood, president of the United Farmers of Alberta ( UFA ) during that movement's time as the governing party of the province ( 1921 – 1935 ).

* 1921 – Jack Kramer, American tennis player ( d. 2009 )

* 1921 – Major League Baseball Commissioner Kenesaw Mountain Landis confirms the ban of the eight Chicago Black Sox, the day after they were acquitted by a Chicago court.

* 1921 – Marilyn Maxwell, American actress ( d. 1972 )

* 1921 – Richard Adler, American songwriter and composer ( d. 2012 )

* 1921 – Hayden Carruth, American poet and critic ( d. 2008 )

* 1999 – Byron Farwell, American historian ( b. 1921 )

The second generation was led by Fernand Braudel ( 1902 – 1985 ) and included Georges Duby ( 1919 – 1996 ), Pierre Goubert ( 1915 – 2012 ), Robert Mandrou ( 1921 – 1984 ), Pierre Chaunu ( 1923 – 2009 ), Jacques Le Goff ( 1924 – ) and Ernest Labrousse ( 1895 – 1988 ).

* 1921 – Nancy Reagan, American actress, 40th First Lady of the United States

* 1921 – Nancy Kelly, American actress ( d. 1995 )

Nancy Davis Reagan ( born Anne Frances Robbins ; July 6, 1921 ) is the widow of former United States President Ronald Reagan and was First Lady of the United States from 1981 to 1989.

* February 3 – Nancy Kulp, American actress ( b. 1921 )

* Nancy Kelly ( 1921 – 1995 ), actress

Nancy Kelly ( March 25, 1921 – January 2, 1995 ) was an American actress, who was a movie leading lady in the late 1930s, making 36 movies between 1926 and 1977, including portraying Tyrone Power's love interest in the classic Jesse James ( 1939 ), which also featured Henry Fonda, and playing opposite Spencer Tracy in Stanley and Livingstone later that same year.

They had one child, a daughter, Nancy ( 1896 – 1921 ).

* Nancy Reagan ( born 1921 ), widow of Ronald Reagan and First Lady from 1981 to 1989

Abstract expressionism was an influence in artists Ralph Balson ( 1890 – 1964 ), influential art teachers John Passmore and Desiderius Orban, Carl Plate ( 1907 – 1977 ), Inge King, Nancy Borlase ( 1914 – 2006 ), William Rose, Tony Tuckson ( 1921 – 1973 ) Tom Gleghorn, Ann Thomson, Stan Rapotec, Clement Meadmore ( 1929 – 2005 ) and Yvonne Audette ( 1930 -).

Nancy Jane Kulp ( August 28, 1921 – February 3, 1991 ) was an American character actress best known as Miss Jane Hathaway on the popular television series The Beverly Hillbillies.

* 1921 – William Asher, American director, screenwriter, and producer ( d. 2012 )

* 1921 – Webb Pierce, American singer-songwriter and guitarist ( d. 1991 )

* 1921 – Esther Williams, American actress and swimmer

* 1843 – C. I. Scofield, American theologian, minister, and writer ( d. 1921 )

* 1921 – Gene Roddenberry, American screenwriter and producer ( d. 1991 )

* Ajax Records ( Quebec ) ( 1921 – 1926 ), a North American record company

* 1921 – Kenneth Arrow, American economist, Nobel Prize laureate

* 1921 – Thomas Schelling, American economist, Nobel laureate

* 1921 – Alex Haley, American historian ( d. 1992 )

* 1921 – Anna Lee Aldred, American jockey, first female to be a licensed jockey ( d. 2006 )

* 1921 – Herb Ellis, American guitarist ( d. 2010 )

* 2002 – John Agar, American actor ( b. 1921 )

In 1920 the Advertiser was merged with The Boston Record, initially the combined newspaper was called the Boston Advertiser however when the combined newspaper became an illustrated tabloid in 1921 it was renamed The Boston American.

*" Piracy Suspected In Disappearance Of 3 American Ships ", The New York Times, June 21, 1921.

* The Cambridge History of English and American Literature, Volume I Ch. 6. 5: De Consolatione Philosophiae, 1907 – 1921.