Study in Europe - List of Institutions that start with O
- Obstetrics & Gynaecology: University of Oxford
- Obstetrics and Gynaecology: University of Cambridge
- Occupational and Environmental Medicine PhD/MPhil: University of Briminghum
- Occupational Hygiene: The University of Manchester
- Occupational Medicine: The University of Manchester
- Occupational Therapy: University of Southampton
- Offshore Engineering: Delft University of Technology
- Oncology, Cancer Research UK Cambridge Research Institute: University of Cambridge
- Oncology: University of Cambridge
- Oncology: VU University Amsterdam
- Operations Management & Logistics: Eindhoven University of Technology
- Operations Research and Management Science: Tilburg University
- Ophthalmology: University of Oxford
- Optics & Photonics: University of Karlsruhe (TH)
- Optics and Imaging: University of Erlangen-Nuremberg
- Optics in Science and Technology: University of Jena
- Oral and Maxillofacial Surgery (Clin): The University of Manchester
- Oral and Maxillofacial Surgery (Dental Specialties): The University of Manchester
- Oral Kinesiology: Academic Centre for Dentistry Amsterdam
- Organic Agriculture: Wageningen University and Research Centre
- Organic Chemistry: University of Oxford
- Organic Food Chain Management: University of Hohenheim
- Oriental Studies (DPhil/MLitt/MSt/MPhil): University of Oxford
- Oriental Studies: University of Cambridge
- Oriental Studies: University of Oxford
- Orientalism: University of Vienna
- Orthodontics (Clin): The University of Manchester
- Orthopaedic Research Unit: University of Cambridge
- Orthopaedic Surgery: University of Oxford
- Osteoarchaeology: University of Southampton