O
- OCF - O'Neill Computing Facility (now called Campus Technology Resource Center)
- O'Connell House,
- Observer, Boston College
- Off Campus Housing
- Office Holidays
- Office of the Chancellor
- Office of the Dean for Student Development (ODSD)
- Office for Human Research Participant Protection - BC IRB
- Office of Institutional Research, Planning and Assesment (IRPA)
- Office of Marketing Communication (OMC)
- Office of Residential Life (ORL)
- Office of Space Planning (IRPA)
- Office for Sponsored Programs (OSP)
- One Card (Eagle-One BC ID Card)
- Online Course Evaluations
- Online, C21 (Church in the 21st Century online courses)
- Online Databases (Libraries)
- Online Writing Lab (OWL)
- O'Neill Computing Facility (now called Campus Technology Resource Center)
- O'Neill Library
- O'Neill Library Catalog - Quest
- Operations and Strategic Management Department, Carroll School of Management
Oracle Application Exress APEX - Orange County, CA Alumni Club
- Orchestra, Boston College Symphony
- Organization Studies Department, Carroll School of Management
- Organization of Latin American Affairs
- Orientation, Freshman
- OWL - Online Writing Lab