O
- Obtaining Residency
- Occupational Health (Environmental Health and Safety)
- Occupational Medicine
- Off-campus courses (also see Extended and Continuing Education)
- Office of Biorenewables Programs
- Office of Intellectual Property and Technology Transfer
- Office of Precollegiate Programs for Talented and Gifted (OPPTAG)
- Office of Social and Economic Trend Analysis (now Regional Capacity Analysis Program)
- Office of Sponsored Programs Administration
- Office of Student Financial Aid
- Office of the President
- Office of the Registrar
- Office of the Treasurer
- Office of the Vice President for Research and Economic Development
- Office of University Counsel (was University Legal Services)
- Office Procedure Guide (now University Policy Manual (UPM))
- Official Transcripts, How to Order
- Ombuds Office
- One Community committee
- Online Store (Extension Publications)
- Open Option
- Operations and Supply Chain Management Major
- OPPTAG
- Orchestra
- Order of the Knoll
- Organic Agriculture
- Organizational Chart, University (PDF)
- Organizational Learning and Human Resource Development (OLHRD)
- Organizations, Student
- Orientation
- Orientation Sample Math Questions
- Osborn Research Club
- Osher Lifelong Learning Institute at ISU (OLLI at ISU)
- Outdoor Recreation
- Outlook Web Access
