English abbreviations from pip to pit
- PIP (Product Improvement Programme)
- PIPA (Program on International Policy Attitudes)
- PIPE (Primary Integrated Platform Environment)
- PIPS (Parallel Information Processing System)
- PIQ (Performance Improvement Quarterly)
- PIR (Priority Intelligence Requirement)
- PIRA (Provisional Irish Republican Army)
- PIRAZ (Positive Identification and Radar Advisory Zone)
- PIRC (Program to Improve Reserve Components)
- PIREP (Pilot Report)
- PIREPS (Pilot Reports)
- PIRG (Public Interest Research Group)
- PIRGIM (Public Interest Research Group In Michigan)
- PIROMA (Pulled It Right Out Of My Ass)
- PIRP (Program on Information Resources Policy)
- PIRT (Purposeful Interference Response Team)
- PIS (Poitiers - Biard Airport)
- PISA (Photovoltaic Information Strategy To Architects)
- PISC (Portuguese Instructive Social Club)
- PISD (Rosa and Raymond Parks Institute for Self-Development)
- PISE (Pasteur Institute Software Environment)
- PISH (Partners In Senior Health)
- PIT (Pittsburgh International Airport)