Dupont Industries, Inc. or DuponTrolley Industries was a Canadian company specializing in the manufacture and rebuilding of buses. Based in Quebec City, it had been in business for over 60 years.
Most of Dupont's clients were in Canada and the United States.
Dupont Industries was founded in 1997 by Jean Dupont, the owner of autobus Dupont (or Dupont Motorcoach), which was founded in 1936 by his grandfather. Dupont Industries, also known as DuponTrolley, built trolley bus replicas (mainly sold to American clients) and performed refurbishment of transit buses (mainly for Canadian clients). Dupont Motorcoach had built a heavy-duty trolley replica which received considerable attention, leading to the spin-off DuponTrolley.