William Gibbons Preston (September 29, 1842 – March 26, 1910) was an American architect who practiced during the last third of the nineteenth century and in the first decade of the twentieth.

Educated at Harvard University and the École des Beaux-Arts in Paris,[4] he was active in Boston, New York, Rhode Island, Ohio, New Brunswick and Savannah, Georgia, where he was brought by George Johnson Baldwin to design the Chatham County courthouse.

[8] The drawings of the Preston firm, now owned by the Boston Public Library, make up "...one of the most complete sets of architectural graphics preserved from the nineteenth century.

[13] 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.