William Bunker Tubby (21 August 1858 – 1944) was an American architect who was particularly notable for his work in New York City.

His creativity and expertise can also be seen in several other Brooklyn homes: the neo-Jacobean Brooklyn Society for Ethical Culture Meeting House, the Romanesque Revival style home at 234 Lincoln Place, the Queen Anne style row at 864-872 Carroll Street, the residences of Brooklyn mayors at 405 Clinton Avenue, and the Dutch Revival house at 43 Willow Street, which Tubby himself occupied.

His institutional designs include Pratt Institute's Student Union from 1887, the Romanesque Revival style South Hall for Pratt Institute in 1892 (designated New York City Landmark), the Renaissance Revival style library building for the Pratt Institute (1896, a designated New York City Landmark), the Romanesque Revival style 83rd Police Precinct House in Brooklyn (1894–95), a designated New York Landmark) and the Flemish Revival style Wallabout Market (demolished) which was once the second-largest market in the world.

[3] Tubby lived in Brooklyn Heights at 43 Willow Street before retiring to Greenwich in his later life.

The following table presents an incomplete list of buildings designed by William Tubby, focusing on those that are extant or for which there is adequate documentation of their style.