List of Famous people who died in 1921

Murphy James Foster was the 31st Governor of the U.S. state of Louisiana, an office he held for two terms from 1892 to 1900. Foster supported the Louisiana Constitution of 1898, which effectively disfranchised the black majority, who were mostly Republicans. This led to Louisiana becoming a one-party Democratic state for several generations and excluding African Americans from the political system.

Harry Lincoln Gordon was an American politician who served as the 27th Lieutenant Governor of Ohio from 1902 to 1904.

Hans Christian Cornelius Mortensen was a Danish teacher and ornithologist. He was the first to employ bird ringing for scientific purposes.

Heinrich Morf was a Swiss linguist and literary historian.

Ernest William Hornung was an English author and poet known for writing the A. J. Raffles series of stories about a gentleman thief in late 19th-century London. Hornung was educated at Uppingham School; as a result of poor health he left the school in December 1883 to travel to Sydney, where he stayed for two years. He drew on his Australian experiences as a background when he began writing, initially short stories and later novels.

Jonas Ferdinand Gabriel Lippmann was a Franco-Luxembourgish physicist and inventor, and Nobel laureate in physics for his method of reproducing colours photographically based on the phenomenon of interference.

Fyodor Andreyevich Sergeyev, better known as Comrade Artyom, was a Russian Bolshevik revolutionary, Soviet politician, agitator, and journalist. He was a close friend of Sergei Kirov and Joseph Stalin. Sergeyev was an ideologist of the Donetsk-Krivoy Rog Soviet Republic.

Francis Henry Blackburne Daniell was an Anglo-Irish barrister and historian, known for his work on the Calendar of State Papers.

Friedrich Justus Heinrich Knecht was a German Catholic theologian, writer and bishop in Freiburg, Germany.