The Byzantine Research Fund Archive (BRF) is a unique collection of architectural drawings, photographs and notebooks created from the late 19th century to the middle of the 20th century by a small team of British architects trained in the Arts & Crafts tradition. 

The collection contains over 1,500 drawings and 1,000 photographs, numerous notebooks and the corporate records associated with the Byzantine Research and Publication Fund, the original body created in 1907 to support this work. The Fund was associated with the BSA from its foundations and in 1937 took over the property and operation of it. The collection contains records of Byzantine monuments in Greece, Turkey, Italy, the Near East, Egypt, and Cyprus. In some cases, the BRF contains the only record of a monument before its destruction in modern times, the most important example being the church of Agios Demetrios in Thessalonike which was almost completely destroyed in the Great Fire of 1917 shortly after being recorded by one of the BRF architects, Walter S. George. 

The BRF also contains personal records of the following architects; Robert Weir Schultz, Sidney H. Barnsley, Walter S. George, A.H.S (Peter) Megaw. The aspirations of the BRF Archive Project today are to make these materials accessible to a wide range of researchers. The BRF Project, which has been mostly funded by the Headley Trust and the Costopoulos Foundation, consists of four major processes: conservation, recataloguing, digitisation, and presentation. The online version of this collection is now available under Museums and Archives Online.