PSB
- Belgian Socialist Party
- Brazilian Socialist Party
- Brunei History Centre
- List of file formats
- Mid-State Regional Airport
- PS Business Parks
- PSB Insights
- PSB Speakers
- Pacific Symposium on Biocomputing
- Paris School of Business
- Penn State Behrend
- Persistent slip bands
- Pet Shop Boys
- Philippine Savings Bank
- Phosphate solubilizing bacteria
- Plus-Tech Squeeze Box
- Polski Słownik Biograficzny
- Polysulfide–bromide battery
- Poplar Street Bridge
- Presidential Service Badge
- Promsvyazbank
- Protected specimen brush
- Proton Synchrotron Booster
- Psychological Strategy Board
- Public Schools Branch
- Public Schools of Brookline
- Public Service Broadcasting (band)
- Public security bureau (China)
- Public service broadcasting in the United Kingdom
- Purple sprouting broccoli
- Purple sulfur bacteria
- United Sarawak Party