- Allen Family Papers, 1766/19335
- Allen-Johnson Family Papers, 1838/19471
- Alumni Association Records, 1833/2014, bulk 1950/20052
- Alumni and VMI certificates and citations collection, 1860/20131
- Ancella Bickley, Historian, Research Papers regarding African-Americans, 1775/2018, bulk 1970/20112
- Ann A. Hertzler Collection, 1863/2013, bulk 1974/20001
- Anna Maria Hickman Otis Mead Chalmers family papers, 1821/18971
- Anne T. Chapman Papers, 1884/19541
- Appalachian Prints Collection, 1839/2010, bulk 1859/19094
- Archibald W. Campbell (1839-1899), Newspaperman, Papers, 1855/1941, bulk 1855/18993
- Architectural League of New York: Archive of Women in Architecture Records, 1892/19761
- Armistead-Cocke Papers, 1680/19172
- Arthur I. Boreman (1823-1896) Papers, 1861/18951
- Arthur I. Boreman Papers, 1830/19494
- Arthur M. Squires Papers, 1888/1987, bulk 1940/19871