- A. H. Hand Papers, 1835/20091
- A. Willis Robertson Papers, 1921/1988, bulk 1946/19663
- Adagio Press Collection, 1957/19935
- Adam Empie Papers, 1811/2004, bulk 1811/18502
- Aliquando Press Collection, 19681
- Alpha Phi Alpha Kappa Pi chapter records, 1972/20112
- Alumni Association Photograph Collection, 1960/2010, bulk 1970/19902
- Alumni Association Records, 1833/2014, bulk 1950/2005119
- Alumni Band Organization Records, 1986/2012, bulk 1986/20001
- Alvin Duke Chandler Papers, 1896/1984, bulk 1950/19608
- American Association of University Professors, College of William and Mary Chapter Records, 1924/1979, bulk 1924/19796
- American Studies Program Records, 1960/20061
- Amos Alonzo Stagg Society Records, 1979/1980, bulk 19791
- Amos Koontz Papers II, 1865/19703
- Ann Buckles Papers, 1950/200873