- Prudential
- PROVENGE® (sipuleucel-T)
- Premier University of Technology
- Premier Medical Group
- PMR.TheClinics.com
- pedlungasthma.com
- Parkway Pantai
- Osteoarthritis and Cartilage
- OrgSync
- Organ Donation Alliance
- Organ Donation Alliance
- ORCA
- Opus - University of Bath
- Opus
- OptiNose
- Optim Imaging
- Optifast
- Ophthalmology
- OPENPediatrics
- Open University of Tanzania Repository
