- G. Sutton Breiding, Poet, Essays, Poems, and Other Material, 1966/20161
- G. William Whitehurst Papers, 1968/20223
- Galt Papers (I), 1745/18921
- Garlinghouse Home Collection, Ranch Home No. 9540, Built Project, c. 1950s - 2023, 1950/20231
- Garnie Walker Testa Papers and Walker-Testa Family Genealogy, 1878/20259
- Gary P. Carpenter collection, 1907/19903
- Gay and Lesbian Student Union (GLSU) Records, 1988/20249
- Gayle Schulman research files, 2003/20141
- Gender and Sexuality Ephemera Collection, 1880/20111
- Gender, Sexuality, and Women's Studies Program Records, 1986/2009, bulk 2000/20105
- Geo. Gregory Smart collection of Washington and Mount Vernon ephemera, 1793/20176
- George Bird Evans Papers, 1932/2013, bulk 1932/19982
- George Conoly Phillips Papers, 1909/20109
- George Greenia papers, 1984/20195
- George Grigg and John Carnochan Papers, 1969/20151