Peter James Marshall CBE FRHistS FBA (born 1933 in Calcutta) is a British historian known for his work on the British Empire, particularly the activities of British East India Company servants in 18th-century Bengal, and also the history of British involvement in North America during the same period. He is not to be confused with his contemporary, the other P. J. Marshall, who chronicled the history of public transport in the British Isles.