- M. Caldwell Butler Papers, 1945/20061
- M. Rosaria Piomelli Architectural Collection, 1960/19959
- M. Rupert Cutler Papers, 1930/2021, bulk 1962/202111
- M. Thomas Inge papers, 1879/20014
- MCV Foundation/Monumental Church records, 1957/19651
- Maakestad Collection, 1972/19842
- Mabel Hoggard, Educator, Papers, 1924/1989, bulk 1932/19891
- Maddex Family Papers, 1937/20001
- Madison E. Marye Papers, 1932/20076
- Magazines, 1836/18961
- Maggie Anderson, Poet, Papers, 1958/2017, bulk 1980/201240
- Malcolm Davis, Artist, Papers, 1970/20159
- Malcolm MacPherson Brownlee Civil War diary and transcription, 1862/20201
- Male (Mayle) Family Genealogical Research Material, 1800/19801
- Manuscripts Artifact Collection, 1800/20107