Peter Harrison may refer to:
Peter Harrison (rugby player), Former Bradford RFC player
Peter Harrison (architect) (1716–1775), British-born colonial American architect
Peter Harrison (businessman), British businessman, CEO of Schroders
Peter Harrison Planetarium, digital laser planetarium situated in Greenwich Park, London
Peter G. Harrison (born 1951), professor of computing science at Imperial College London
Peter Harrison (Brookside), a character from the British television series Brookside
Peter Harrison (historian), Former Idreos Professor at Oxford, now Research Professor at the University of Queensland
Peter Harrison (city planner), Canberra city planner, see Harrison, Australian Capital Territory
P. S. Harrison (1880–1966), also known as Peter S. Harrison, founder and publisher of Harrison's Reports
Pete Harrison (1885–1921), English-American baseball umpire