- G. Sutton Breiding, Poet, Essays, Poems, and Other Material, 1966/20161
- G. William Whitehurst Papers, 1968/20222
- Garlinghouse Home Collection, Ranch Home No. 9540, Built Project, c. 1950s - 2023, 1950/20231
- Garnie Walker Testa Papers and Walker-Testa Family Genealogy, 1878/20254
- Gary P. Carpenter collection, 1907/19903
- Gay and Lesbian Archives, 1978/20074
- Gay and Lesbian Student Union (GLSU) Records, 1988/20247
- Gayle Schulman research files, 2003/20141
- Gender and Sexuality Ephemera Collection, 1880/20112
- Gender, Sexuality, and Women's Studies Program Records, 1986/2009, bulk 2000/20106
- Geo. Gregory Smart collection of Washington and Mount Vernon ephemera, 1793/20176
- George Bird Evans Papers, 1932/2013, bulk 1932/19983
- George Conoly Phillips Papers, 1909/201012
- George Garrett papers, 1855/2008171
- George Greenia papers, 1984/20197