William Warren Boyington (July 22, 1818 – October 16, 1898) was an architect who designed several notable structures in and around Chicago, Illinois.

Originally from Massachusetts, W.W. Boyington studied engineering and architecture in the State of New York.

After this, he practiced there and served in the New York State Legislature before he decided to settle and work in the emerging metropolis of Chicago, Illinois in 1853.

Other buildings accredited to W.W. Boyington include: The First LaSalle Street Station, 1867-71 (cost $225,000[2]); Second Presbyterian Church, 1888 (since 1987 the Cornerstone Building) in Peoria Illinois (cost $50,000);[3] The New State Capitol Building in Springfield, Illinois; the first University of Chicago located at 34th Street and Cottage Grove Avenue (1859, 1863, 1865; all demolished); the first Sherman House located at Clark and Randolph Streets 1859, (demolished in 1910); residence for Washington and Jane Smith, 1870 (cost $75,000[4]), demolished; the entrance gate of Rosehill Cemetery; the old Second Baptist Church of Chicago (now the Aiken Institute); the 1864 Democratic Convention Hall; the old Chicago Board of Trade Building at the Head of LaSalle Street, 1885 (demolished in 1928 for construction of the present Holabird and Root Building); and the Windsor Hotels of Montreal, Canada and Denver, Colorado; the Terrace Hill Homestead (Iowa's Governor's Mansion); the Hegeler Carus Mansion of LaSalle, Illinois; Heaney's Block in Rochester, Minnesota, 1866 (destroyed by fire 1917); the Milikin Bank Building (demolished) in Decatur, Illinois; the Illinois State Building for the 1893 Chicago World's Columbian Exposition (demolished at the end of the fair) ;the Transfer House, 1896 in Decatur; and the Joliet Prison.

[5] His Grand Pacific Hotel, 1871, was destroyed by the Great Chicago Fire as it was being completed but was rebuilt according to the original plans in 1873.