Frederick Willard Thompson (5 June 1900 – 9 March 1987) was a Canadian-American labor organizer and historian. A member of the Industrial Workers of the World (IWW) for 65 years, he was first elected to the General Executive Board in 1928. He served in various capacities for the organization, including as the General Secretary-Treasurer of the Industrial Workers of the World from March 1936 to February 1937 and as editor of the IWW's primary newspaper, the Industrial Worker. In a 1987 obituary published by Labour/Le Travail, scholar and poet Franklin Rosemont described Thompson as "the most influential Wobbly since the 1930s."