Thomas William Manning (June 28, 1946 – July 29, 2019) was an American Marxist militant convicted of killing New Jersey State Police trooper Philip J. Lamonaco during a traffic stop in 1981.

[1][2] Before and after the murder he was involved with a Marxist organization, the United Freedom Front (UFF), which bombed a series of US military and commercial institutes and committed bank robberies in the 1970s and early 1980s.

Some time shortly after 1965, he was sentenced by a Massachusetts state court to five years in prison for armed robbery and assault, serving the last ten months in MCI-Cedar Junction.

[6] The killing launched the largest manhunt in New Jersey police history,[7] and ended with the arrests of Raymond and Patricia Levasseur, Richard Williams, Jaan Laaman, and Barbara Curzi on November 4, 1984, and Tom and Carol Manning, on April 24, 1985.

[1] In September 2006, the University of Southern Maine removed Manning's artwork from an art presentation, and apologized for allowing him to be heralded as a "political prisoner" by event organizers.