Mannheim Hermann (1889, Libau (now - Liepaja) — 1974, Orpington, United Kingdom) — criminologist.

Doctor of Law (1912), professor (1929). From 1908 to 1911, he studied at the universities of Munich, Freiburg, Strasbourg and Königsberg. From 1914 to 1918, he served in the German army. In 1917–18, he acted as a military judge; from 1923 to 1933, he served as a judge in a criminal court. From 1922 to 1934, he taught at Berlin University.

In 1934, he emigrated to the United Kingdom. From 1935 to 1955, he worked at the London School of Economics, University of London. From 1940 through the 1960s, he was one of the leading figures in the reform of the penal system. Mannheim was described as the “father of modern English criminology”, based on the consideration of social and psychological factors. He worked extensively on juvenile delinquency and the corresponding system of punishment.

From 1950 to 1966, he was one of the founders and co-editors of the criminological journal Journal of Delinquency. In 1960, he founded the Library of Criminology series, serving as its co-editor until 1966.