Kilham & Hopkins was an architectural firm in Boston, Massachusetts formed in 1899 or 1900 by its founding members, Walter Harrington Kilham (August 30, 1868 - September 11, 1948) and James Cleveland Hopkins (December 25, 1873 - 1938). The firm later became Kilham, Hopkins & Greeley after William Roger Greeley (May 12, 1881 - October 1966) joined the firm in 1916, and Kilham Hopkins Greeley and Brodie after Walter S. (Steve) Brodie (October 26, 1911 - January 1985) joined the firm in 1945.
The firm has been recognized for its contributions to early 20th century reform housing, including its work at the Atlantic Heights Development in Portsmouth, New Hampshire, at the Woodbourne Historic District in the Forest Hills section of the Jamaica Plain neighborhood of Boston, and for the Naumkeag Steam Cotton Company in the Salem Point Neighborhood of Salem, Massachusetts. A number of the firm's works, including Blithewold and Hose House No. 2, have been listed on the National Register of Historic Places.
Kilham & Hopkins was formed in 1899 or 1900 by its founding members, Walter H. Kilham and James C. Hopkins. Both were graduates of Massachusetts Institute of Technology, Kilham receiving a B.S. in 1889 and Hopkins receiving his in 1895.
The works of the firm up to 1912 were documented in an illustrated retrospective, "The Work of Kilham & Hopkin: Architects of Boston, Massachusetts" published in Architectural Record. Kilham served as an instructor in architecture at the Massachusetts Institute of Technology for several years, and also developed a reputation for his work as a painter.