( 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 – Jean Richard, French actor ( d. 2001 )

* 1921 – Maurice Richard, Canadian ice hockey player ( d. 2000 )

* 1921 – Richard Wilbur, American poet

* 2000 – Maurice Richard, Canadian ice hockey player ( b. 1921 )

The term is a transliteration of the Ancient Greek (), meaning " imitator, pretender ", and was used in 1904, by the German evolutionary biologist Richard Semon, best known for his development of the engram theory of memory, in his work Die mnemischen Empfindungen in ihren Beziehungen zu den Originalempfindungen, translated into English in 1921 as The Mneme.

* Pettigrew, Richard Franklin ( 1921 ).

* 1921 – Richard Gordon, English author

* August 8 – Richard Deacon, American actor ( b. 1921 )

* July 20 – Richard Egan, American actor ( b. 1921 )

* May 31 – Julius Richard Petri, German bacteriologist ( d. 1921 )

His nephews include Richard Keynes ( 1919 – 2010 ) a physiologist ; and Quentin Keynes ( 1921 – 2003 ), an adventurer and bibliophile.

* Lewis Richard Farnell, Greek Hero Cults and Ideas of Immortality, 1921.

On 31 January 1921, Richard Dawson Bates, the first Minister of Home Affairs for Northern Ireland, appointed a committee of inquiry on police organisation in Northern Ireland.

* In America with Richard Strauss: Elisabeth Schumann's 1921 diary

Humphrey Richard Adeane Lyttelton ( 23 May 1921 – 25 April 2008 ), also known as Humph, was an English jazz musician and broadcaster, and chairman of the BBC radio comedy programme I'm Sorry I Haven't a Clue.

Joseph Henri Maurice " The Rocket " Richard, (; ; August 4, 1921 – May 27, 2000 ) was a Canadian professional ice hockey player who played for the Montreal Canadiens of the National Hockey League ( NHL ) from 1942 to 1960.

Born August 4, 1921, Maurice Richard was the eldest of eight children ( five sons: Maurice, Henri, Claude, René and Jacques ; three daughters: Rollande, Marguerite and Georgette ) of Onesime and Alice Richard.

* 1921 Dr Richard Henry Coleman

Richard Purdy Wilbur ( born March 1, 1921 ) is an American poet and literary translator.

* Richard Wilbur ( born 1921 ), poet, critic, and translator grew up in North Caldwell and won two Pulitzer Prizes and served as United States Poet Laureate.

1910 – 1921 Richard Bullwinkle ( R )

* Princess Pauline von Metternich ( 1836 – 1921 ), niece of Klemens and wife of Richard von Metternich