Peter Barrett may refer to: Peter Barrett (illustrator) (born 1935), British painter, illustrator, graphic designer and children's book author Peter Barrett (bishop) (1956–2015), Church of Ireland bishop Peter Barrett (sailor) (1935–2000), American sailor Peter Barrett (cricketer) (1955–1983), English cricketer Peter Barrett (geologist) (born 1940), New Zealand geologist and professor at Victoria University of Wellington Peter Barrett (politician), member of the Tasmanian House of Assembly Peter Barrett (entrepreneur), Australian entrepreneur