Collection
- O'Shaughnessy Family Papers23
- O. Henry Collection1
- O.D. Linder, Compiler, Genealogy Records Regarding the Boyce, Dever, Gibson, and Linder Families1
- O.J. Morrison Department Stores Company (West Virginia and Ohio) Records1
- O.W. Riegel Papers866
- Oak Grove Baptist Church Records1
- Oak Grove Baptist Church collection1
- Obelia "Bee" Graves Papers3
- Ocean View, Seaside, and Seaview Amusement Parks Collection44
- Office of Admission records3
- Office of Alumni Engagement records3
- Office of Communications and Marketing subject files71
- Office of Institutional Research and Assessment Records2
- Office of Student Aid Records, 1937-20051
- Office of University Development records2