PBI

• Predominantly Black Institution, a college or university that is not technically an HBCU, but primarily serves African Americans

• the ICAO code of Pacific Blue Airlines
• the IATA airport code of Palm Beach International Airport in West Palm Beach, Florida
• Pan Britannica Industries
• Labour Party of Indonesia (Indonesian: Partai Buruh Indonesia), a political party in Indonesia.
• Pastoral Bible Institute
• Peace Brigades International, a non-governmental organization founded in 1981
• Pitney Bowes Inc.'s stock ticker symbol
• Prairie Bible Institute, a Bible college near Three Hills, Alberta
• Polar Bears International
• Public Benevolent Institution, a type of charity in Australia
• Police Bureau of Investigation, a specialized unit of the Bangladesh Police

• Phenylbenzimidazole, a common sunscreen ingredient
• Polybenzimidazole fiber
• Perylene-3,4:9,10-tetracarboxylic acid bisimide, also perylene bisimide or perylene diimide (PDI)

• Parallel Bus Interface, a 50-pin port found on some Atari 8-bit XL computers
• PBI Regional Medical Center, a hospital in Passaic, New Jersey
• {{mono|.pbi}}, a computer filename extension used on by the TrueOS operating system
• Problem Investigation, by PT Inovação{{clarify|date=October 2018}}
• Product backlog item, a term used in the Scrum variant of the Agile methodology used for software development
• Power BI, a business intelligence platform by Microsoft, used for reporting and dashboards

• Poor Bloody Infantry, a military slang term.
• Partial basic income, a basic income set at a level that is less than enough to meet a person's basic needs

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