William Francis Dunne (October 15, 1887 – September 23, 1953) was an American Marxist political activist, newspaper editor and trade unionist. He is best remembered as the editor of the radical Butte Bulletin around the turn of the 1920s and as an editor of the daily newspaper of the Communist Party USA from the middle-1920s through the 1930s. Dunne was founding member of the Communist Labor Party of America, but was removed from the national leadership of the party in 1934 and expelled in 1946 on charges of factionalism.