PBI
- Charitable organization
- Labour Party of Indonesia
- Minority-serving institution
- PBI Regional Medical Center
- Pacific Blue Airlines
- Palm Beach International Airport
- Pan Britannica Industries
- Parallel Bus Interface
- Partial basic income
- Pastoral Bible Institute
- Peace Brigades International
- Phenylbenzimidazole sulfonic acid
- Pitney Bowes
- Polar Bears International
- Police Bureau of Investigation
- Polybenzimidazole fiber
- Poor Bloody Infantry
- Power BI
- Prairie Bible Institute
- Product backlog item
- TrueOS