William G. (Gibbons) Preston (1842–1910) was an American architect. He was active in Boston and Georgia, where he designed the De Soto Hotel and the Savannah Volunteer Guards Armory. Many of his buildings were pictured as prints in American Architect and Building News.
He designed Massachusetts Institute of Technology's Rogers Building in 1864, located on Boylston Street near Boston's Copley Square, which housed the school's architecture department. Floor plans for the building show a large, centrally located space devoted to an architectural library and museum. Drawings from the Study Collection were hung on the studio walls and numerous casts and other artifacts also lined the walls and picture rails.