Lista de Personas Famosas que murieron en 1921

Andrea Carlo Ferrari fue un cardenal de la Iglesia católica y Arzobispo de Milán. Fue beatificado por el papa Juan Pablo II el 10 de mayo de 1987.

William Speirs Bruce fue un científico polar, naturalista y oceanógrafo británico, que organizó y dirigió la Expedición Antártica Nacional Escocesa de 1902-1904. Hizo muchos viajes a las regiones árticas, tanto con fines científicos como comerciales.

Hardinge Stanley Giffard, 1st Earl of Halsbury, PC QC later KC was a British lawyer and Conservative politician. He served three times as Lord High Chancellor of Great Britain, for a total of seventeen years.

Ōe Taku was a samurai, bureaucrat, politician, entrepreneur and social activist in the late Meiji and Taishō period Empire of Japan. He is noted as one of the more progressive figures of the early Meiji period, although his record is complex. His wife was the younger daughter of Gotō Shōjirō.

Colonel Robert George Wardlaw-Ramsay FLS, FZS was an army officer and naturalist. His father was Robert Balfour Wardlaw-Ramsay while his mother Louisa was the third daughter of George, eighth Marquess of Tweeddale. He studied at Cheam and Harrow before joining the Hampshire Regiment in January 1871 to be stationed in India, Afghanistan and Burma. His interest in birds began as a young boy and in 1872 he was elected a member of the British Ornithologists' Union and was later (1913-1918) to become its president. He was also a Fellow of the Zoological Society. During his various army postings he took a great interest in the local ornithology. He was a nephew of Arthur Hay, 9th Marquess of Tweeddale and inherited a large collection of over 20,000 bird skins that was later presented to the British Museum. He also edited The Ornithological works of Arthur 9th Marquis of Tweeddale (1881) and towards the end of his life was writing a Guide to the birds of Europe and North Africa (1923) which was published posthumously.

Olga Alexandrovna Armfeldt de Fédchenko fue una botánica rusa que fue miembro correspondiente de la Academia de las Ciencias de Rusia, en San Petersburgo. Era la esposa del biólogo y geógrafo Alexeï Fédchenko (1844-1873), y la madre del naturalista y botánico Boris Fédchenko (1872-1947), e hija del profesor de medicina de la Universidad de Moscú, Alexandre Armfeldt (1806-1868). Al uso de su tiempo se utilizó para el alfabeto latino, la ortografía alemana de su nombre, es decir, Fedtschenko.