Colonel William Patrick Anderson (1851–1927) was a Canadian civil engineer. He was Superintendent of Lighthouses for almost 40 years, and was responsible for many of the more notable lighthouses in Canada.
He was born September 4, 1851 at Lévis, Quebec, and educated at what is now Bishop's University. After studying for a year at Manitoba College, he began work as a railway and township surveyor. In 1874, he began work as a draftsman at the Department of Marine and Fisheries in Ottawa, working on the design of lighthouses. In 1876 he married Dorothea Susannah Small.
Anderson became Chief Engineer of the department in 1880, and served continuously until his retirement in 1919. During his career, he designed and built more than 500 lighthouses and fifty fog-alarm stations across Canada. Among the more important works may be mentioned the Colchester Reef lighthouse (1885) on a caisson in Lake Erie, the construction and installation in 1898 of the first-order fog siren station on Belle Isle (Newfoundland and Labrador), and the nine flying buttress lighthouses at Pointe-au-Pere, Escarpment Bagot, Estevan Point, Michipicoten Island, Caribou Island, Belle Isle Northeast, Cape Bauld, Cape Norman, and Cape Anguille. Near the end of his career, Anderson designed the visually appealing Point Abino Lighthouse near Fort Erie, Ontario.