John Fraser (October 18, 1825 – December 26, 1906) was a Scottish-born American architect who practiced in Philadelphia, Pennsylvania and Washington, D.C. His most significant surviving building is the Union League of Philadelphia (1864–65), a High Victorian, Second Empire gentlemen's club constructed of brick and brownstone. His career is overshadowed by that of his former student and one-time partner, Frank Furness (Fraser, Furness & Hewitt: 1867-71), whose influence is visible in Fraser's Washington, D.C. mansions for James G. Blaine and John T. Brodhead. He served as acting supervisory architect for the U.S. Treasury (December 1878 - May 1879), created a master plan for the U.S. Capitol grounds, submitted among others a design for the Washington Monument and served later on the commission to complete Robert Mills's project of the Washington Monument. He was one of the founders of the Philadelphia chapter of the American Institute of Architects. He maintained a residence in Riverton, New Jersey, and designed a number of buildings there. By 1888, he had entered into a partnership with his son Archibald, and continued working until about 1902.

Notable buildings