List of Famous people who died in 1920

Charles Lapworth FRS FGS was a headteacher and an English geologist who pioneered faunal analysis using index fossils and identified the Ordovician period.

Gustav Piers Alexander von Bunge was a German physiologist known for work in the field of nutrition physiology. He was the son of botanist Alexander von Bunge (1803–1890).

Otto Hans Adolf Gross was an Austrian psychoanalyst. A maverick early disciple of Sigmund Freud, he later became an anarchist and joined the utopian Ascona community.

Paul Kleinert was a German theologian, born at Vielguth in Prussian Silesia.

Leopold Pfaundler von Hadermur was an Austrian physicist and chemist born in Innsbruck. He was the father of pediatrician Meinhard von Pfaundler (1872-1947), and the father-in-law of pediatrician Theodor Escherich (1857-1911).

Marie Adolphe Carnot was a French chemist, mining engineer and politician. He came from a distinguished family: his father, Hippolyte Carnot, and brother, Marie François Sadi Carnot, were politicians, the latter becoming President of the third French Republic.

Vincenzo Colosimo, known as James "Big Jim" Colosimo or as "Diamond Jim", was an Italian-American Mafia crime boss who emigrated from Calabria, Italy, in 1895 and built a criminal empire in Chicago based on prostitution, gambling and racketeering. He gained power through petty crime and by heading a chain of brothels. From about 1902 until his death in 1920, he led a gang that became known after his death as the Chicago Outfit. Johnny Torrio was an enforcer whom Colosimo imported in 1909 from New York and who seized control after his death. Al Capone, a Torrio henchman, allegedly was directly involved in the murder.

Matvei Vasilyevich Golovinski was a Russian-French writer, journalist and political activist. Critics studying The Protocols of the Elders of Zion have argued that he was the author of the work. This claim is reinforced by the writings of modern Russian historian Mikhail Lepekhine, who in 1999 studied previously closed French archives stored in Moscow containing information supporting Golovinski's authorship. Back in the mid-1930s, Russian testimony in the Berne Trial had linked the head of Russian security service in Paris, Pyotr Rachkovsky, to the creation of The Protocols.

Maximilian Karl Emil Weber was a German sociologist, historian, jurist, and political economist, who is regarded among the most important theorists on the development of modern Western society. His ideas would profoundly influence social theory and social research. Despite being recognized as one of the fathers of sociology, along with Auguste Comte and Émile Durkheim, Weber never saw himself as a sociologist, but as a historian.