- M. Rupert Cutler Papers, 1930/2021, bulk 1962/2021197
- Maggie Anderson, Poet, Papers, 1958/2017, bulk 1980/201224
- Major General Kenneth D. Gray Papers, 1990/20251
- Malcolm Davis, Artist, Papers, 1970/20157
- Malcolm MacPherson Brownlee Civil War diary and transcription, 1862/20201
- Manuscripts Artifact Collection, 1800/20103
- Manuscripts Audiovisual Collection, 1920/201311
- Marc Harshman, Poet Laureate of West Virginia, Papers, 1970/202363
- Marching Royal Dukes Records, 1975/201638
- Marcus L. Oliver Correspondence, 1947/2010, bulk 1950/19854
- Margaret B. Ballard, Compiler, Monroe County Historical Papers and Other Material, 1783/2021, bulk 1910/19702
- Margaret M. Sullivan Collection, 1932/20112
- Margaret R. Thomas newsletters, 1970/20202
- Margaret Stephenson collection on Nansemond County Training School, 2000/2014, bulk 2013/20143
- Marlene K. Jack papers, 1981/19981