Bernard Faÿ (3 April 1893, Paris – 31 December 1978, Tours) was a French historian of Franco-American relations, and an anti-Masonic polemicist who believed in a worldwide Jewish-Freemason conspiracy. He knew the United States at first hand, having studied at Harvard, and translated into French an excerpt of Gertrude Stein's ''The Making of Americans'' and wrote his view of the United States as it was at the beginning of Franklin D. Roosevelt's administration. He also published studies of Benjamin Franklin and George Washington. Faÿ was a friend of Gertrude Stein, Alice B. Toklas and of the American composer Virgil Thomson, who owed to Fay his access to French intellectual circles, for Faÿ knew most of the people in musical and literary Paris. He was active in compiling files on and attacking and imprisoning Freemasons during the Vichy regime, 1940-44. He was convicted and sentenced to life in prison. He escaped after 5 years and resumed teaching history in Switzerland, in Fribourg, Ouchy and Lutry.
M. Fäy taught European History, American History and Cultural History.
For this last, he employed the sort of photographic aide mémoires that were still used at the time at top tier American colleges and universities.