British historian, who was most noted for his work on 18th- and 19th-century Europe.

Namier immigrated to England in 1906 and studied at Balliol College, Oxford. He took British nationality and legally adopted an Anglicized name before World War I, in which he served first in the army and then in the Foreign Office, where he remained until 1920. Namier failed to get a teaching post at Oxford, went into business, and later devoted his time to research.

The appearance of Namier's The Structure of Politics at the Accession of George III in 1929 revolutionized 18th-century historiography and remains his most considerable work. By intensive research over a brief period, he aimed to show why men entered politics, and he rejected the simple classification of Whig and Tory in favour of personal, family, or regional interests. He was professor of modern history (1931–53) at the Victoria University of Manchester and produced various books of essays and two important works: 1848: The Revolution of the Intellectuals (1946) and Diplomatic Prelude, 1938–39 (1948). Of an official History of Parliament, begun under his editorship, part I, The House of Commons, 1745–90, in three volumes, appeared in 1964.

Namier was made an honorary fellow of Balliol in 1948 and was knighted in 1952. His approach to history attracted many followers but also created opposition among historians who felt that he ignored irrational elements in history in favour of a preoccupation with the mechanism of politics.