Thomas Bernard Clark Brigham (September 3, 1919 – February 14, 1993) was an American convicted of planting a bomb in Central Station in Montreal, Quebec, Canada on September 3, 1984, killing three French tourists and injuring 30–47 other people. He was widely believed to be protesting Pope John Paul II's impending visit to Canada later that week, although he said that he had nothing against the Pope because he was "going to be our ambassador against the Communists".