Frank Straus Meyer (1909–1972) was an American philosopher and political activist best known for his theory of "fusionism" – a political philosophy that unites elements of libertarianism and traditionalism into a philosophical synthesis which is posited as the definition of modern American conservatism. Meyer's philosophy was presented in two books, primarily In Defense of Freedom: A Conservative Credo (1962) and also in a collection of his essays, The Conservative Mainstream (1969). Fusionism has been summed up by E. J. Dionne, Jr. as “utilizing libertarian means in a conservative society for traditionalist ends.”
Meyer was born to a prominent business family in Newark, New Jersey, the son of Helene (Straus) and Jack F. Meyer. He attended Princeton University for one year and then transferred to Balliol College at Oxford University where he earned his B.A in 1932 and his M.A in 1934. He later studied at the London School of Economics and became the student union's president before being expelled and deported in 1933 for his communist activism.
Like a number of the founding senior editors of National Review magazine, Meyer was first a Communist Party USA apparatchik before his conversion to political conservatism. The experiences as a communist are reported in his book, The Moulding of Communists: The Training of the Communist Cadre, 1961. Meyer began an “agonizing reappraisal of his communist beliefs" after reading F.A. Hayek’s The Road to Serfdom while serving in the U.S. Army during World War II, and made a complete break in 1945 after fourteen years in active leadership service to the communist party and its cause. Following the war, he contributed articles to the early free market periodical, The Freeman, and later joined the original staff of National Review in 1955.