List of Famous people who died in 1921

Petrus Josephus Hubertus "Pierre" Cuypers was a Dutch architect. His name is most frequently associated with the Amsterdam Central Station (1881–1889) and the Rijksmuseum (1876–1885), both in Amsterdam. More representative for his oeuvre, however, are numerous churches, of which he designed more than 100. Moreover, he restored many monuments.

Major General Sir Harry Barron, was a British Army officer who served as Governor of Tasmania from 1909 to 1913, and Governor of Western Australia from 1913 to 1917.

Frederic Dudley North was an English-born public servant and sportsman. A descendant of the Barons North, he attended Rugby School before emigrating to Western Australia in 1886. North played two first-class matches for Western Australia, and was also involved in cricket administration, serving as the first secretary of the Western Australian Cricket Association (WACA). Outside of cricket, North worked as a public servant, filling various roles in the Western Australian government, including secretary to Sir John Forrest, the first Premier of Western Australia, and head Colonial Secretary's Department. He was also Mayor of Cottesloe between 1906 and 1907 and again from 1911 to 1916. North died in Cottesloe from a heart attack in 1921, at the age of 54.

Engelbert Humperdinck was a German composer, who is best known for having composed the opera Hansel and Gretel.

Francisco Pradilla Ortiz was a prolific Spanish painter famous for creating historical scenes.

Giorgio Gusmini was a Cardinal of the Roman Catholic Church who served as Archbishop of Bologna.

Ernst Gunther II, Duke of Schleswig-Holstein-Sonderburg-Augustenburg, Duke of Schleswig-Holstein, was a son of Frederick VIII, Duke of Schleswig-Holstein and Princess Adelheid of Hohenlohe-Langenburg. He inherited his father's title as titular third duke of Schleswig-Holstein.

Lieutenant-Colonel Robert Peel Dawson Spencer Chichester, DL, JP was an Irish soldier and politician.

James Gibbons was an American prelate of the Catholic Church. He served as Apostolic Vicar of North Carolina from 1868 to 1872, Bishop of Richmond from 1872 to 1877, and as ninth Archbishop of Baltimore from 1877 until his death in 1921. Gibbons was elevated to the rank of cardinal in 1886.