List of Famous people who died in 1921

Karl Rathgen was a German economist. He was the first Chancellor of the University of Hamburg.

Philander Chase Knox was an American lawyer, bank director and politician. A member of the Republican Party, Knox served in the Cabinet of three different presidents and represented Pennsylvania in the United States Senate.

Edvard Immanuel Hjelt was a Finnish chemist, politician and a member of the Senate of Finland. Hjelt studied chemistry in Finland and in Germany and became rector of the University of Helsinki in 1899. He opposed the increasing influence of Russia in the Grand Duchy of Finland and started his career in politics. Good connections to Germany created during his chemistry studies before and after his graduation made it possible for him to get military help during the Finnish Civil War. Hjelt organized the training of the Finnish Jäger troops in Germany.

Marie Joseph Robert Anatole, Comte de Montesquiou-Fézensac was a French aesthete, Symbolist poet, art collector and dandy. He is reputed to have been the inspiration both for Jean des Esseintes in Joris-Karl Huysmans' À rebours (1884) and most famously for the Baron de Charlus in Marcel Proust's À la recherche du temps perdu (1913–1927). He also won a bronze medal in the hacks and hunter combined event at the 1900 Summer Olympics.

Ludwig Knorr was a German chemist. Together with Carl Paal, he discovered the Paal–Knorr synthesis, and the Knorr quinoline synthesis and Knorr pyrrole synthesis are also named after him. The synthesis in 1883 of the analgesic drug antipyrine, now called phenazone, was a commercial success. Antipyrine was the first synthetic drug and the most widely used drug until it was replaced by Aspirin in the early 20th century.

Lady Henry Somerset was a British philanthropist, temperance leader and campaigner for women's rights. As president of the British Women's Temperance Association she spoke at the first World's Woman's Christian Temperance Association convention in Boston in 1891.

Hermann Otto Theodor Paul was a German philologist, linguist and lexicographer.