ARCHIBALD [ARCHive of Belgian Arts Letters and Documents] is the database of the Archives of Contemporary Art in Belgium.

The ARCHIBALD database contains documents from the funds and collections of the Archives of Contemporary Art in Belgium (BCAA).

The scientific research project "The XX and the Libre Esthetique (1884-1914). Critical edition and digitization of the Octave Maus fund", made it possible to launch the database in 2009 by placing online nearly 2,000 letters addressed to art critic and writer Octave Maus. After this, priority was given to the archives related to René Magritte, a major figure of painting in Belgium, and then to other significant archives and to more recent acquisitions of the AACB.

The digitization of the archives is still in progress. For now the descriptive data are available only in French and Dutch. In addition, only a limited number of images (low resolution) are available.