- O'Brien, Abbie Research Assistant
- O'Brien, Timothy
- O'Callaghan, Tonia
- O'Hara, Julia Associate Lecturer
- O'Hare, Tim Deputy Head of School
- O'Neil, Catriona Associate Lecturer
- O'Neill, Jo Deputy Clinical Lead (SDLE)
- O'Neill, Lauren Senior Administrator (International Recruitment)
- O'Shaughnessy, Emma Research Assistant (REFINE)
- O'Toole, Mary Lecturer in Mental Health Nursing (Education)
- Oak, Katy Honorary Clinical Research Associate
- Obolensky, Lucy Associate Professor of Global Health & Remote Medicine
- Odu-Onikosi, Sheu Weekend Duty Technician (Main Campus)
- Oehring, Daniela Associate Professor in Optometry
- Offer, Timothy Associate Tutor
- Ogbeke, Kingsley
- Ogbole, Blessing
- Ogunsakin, Kolawole Marker
- Oh, Tomasina Associate Professor - Dementia Research
- Ojeomokhai, Daniel
- Okami, Sabine Estates and Projects Support Assistant (Sustainability)
- Oladinrin, Olugbenga Associate Professor in Construction Project Management
- Olaniyi, Olasumbo
- Oliver, Kathy Assistant Administrator - Admissions
- Olmesdahl, Sandra
- Olugbode, Moji Lecturer in Accounting and Finance
- Omoruyi, Ben
- Ong, Aira Project Manager - TULAY
- Ong, Eng Honorary University Fellow
- Ong, Rima Technician: Media
- Orange, Hilary External Examiner
- Orme-Lynch, Maya
- Ortiz, Maria
- Osadiya, Opeyemi Lecturer in Early Childhood Studies
- Osgathorpe, Lingyuan Postgraduate Student Experience Manager
- Oti, Jonathan External Examiner
- Outram, Nicholas Associate Professor in Computing and Electronics (Education)
- Ovenden-Hope, Tanya Visiting Research Fellow
- Owen, David Associate Professor in Business Management & Operations (Education)
- Owen, Georgia Or George Technical Assistant - Stores Person
- Owens, Dean Lecturer - Illustration with Drawing
- Oxenham, Andy Senior Technician (COAST & Light Fluids)