| Acronym | Definition |
|---|
| PAI➣Plasminogen Activator Inhibitor |
| PAI➣Personal Accident Insurance |
| PAI➣Population Action International |
| PAI➣Piano Assetto Idrogeologico (Italian: Hydrogeological Plan) |
| PAI➣Polyamide-Imide |
| PAI➣P-Asserted Identity |
| PAI➣Premise Attachment Interface |
| PAI➣Pulse Accumulator Input |
| PAI➣Personality Assessment Inventory |
| PAI➣Pathogenicity Island |
| PAI➣Protection and Advocacy Inc. |
| PAI➣Project AI (Microsoft Flight Simulator) |
| PAI➣Private Attorney Involvement (Legal Services Corporation) |
| PAI➣Performing Arts Institute (various locations) |
| PAI➣Pre-Approval Inspection (FDA) |
| PAI➣Patient Assessment Instrument |
| PAI➣Public Authority for Industry (Kuwait) |
| PAI➣Publicly Available Information (valuation) |
| PAI➣Parti Africain de l’Indépendance (African Independence Party; Burkina Faso) |
| PAI➣Price Alignment Interest (finance) |
| PAI➣Public Awareness Initiative (media) |
| PAI➣Polymorphic Alu Insertion |
| PAI➣Palo Alto Investors (Palo Alto, CA) |
| PAI➣Party for African Independence (Burkina Faso) |
| PAI➣Process After Input |
| PAI➣Precision Aviation, Inc. (various locations) |
| PAI➣Primary Aircraft Inventory |
| PAI➣Peninsula Art Institute (California) |
| PAI➣Puppetry Arts Institute (Independence, MO) |
| PAI➣Performance Appraisal Instrument (employment) |
| PAI➣Personnel Asset Inventory |
| PAI➣Pesticide Active Ingredient |
| PAI➣Product Authentication International (UK) |
| PAI➣Pre Accession Instrument (EU) |
| PAI➣Public Administration Institution (Washington Business and Technology Institute) |
| PAI➣Processed Apples Institute |
| PAI➣Pathology Associates International (SAIC subsidiary) |
| PAI➣Permit Authorizing Individual (National Fire Protection Association) |
| PAI➣Positive Action, Inc. (Twin Falls, ID; education) |
| PAI➣Pure Active Ingredient (EPA) |
| PAI➣Performance Audit Inspection |
| PAI➣Polizia dell'Africa Italiana (Italian African Police) |
| PAI➣Panduit Authorized Installer |
| PAI➣Pancreatitis Association International |
| PAI➣Prescient Applied Intelligence (Park City, UT) |
| PAI➣pubic arch interference |
| PAI➣Pre-Arrival Instruction (emergency dispatch) |
| PAI➣Physicians Advocacy Institute, Inc. |
| PAI➣Programme d'Action Intégré (French: Integrated Action Program) |
| PAI➣Physics Applications, Inc. |
| PAI➣Pacific Achievement International |
| PAI➣Principal Arterial-Interstate |
| PAI➣Passengers Association of India |
| PAI➣Poverty Alleviation Initiative |
| PAI➣Payload Analytical Integration |
| PAI➣Programme d’actions intégrées de recherche (Research Integrated Action Programmes) |
| PAI➣Princeton AIDS Initiative (Princeton, NJ) |
| PAI➣Personal Appearance Inspection (USAF Academy) |
| PAI➣Pervasive Artificial Intelligence |
| PAI➣Product Acquisition and Installation |
| PAI➣Police Accident Investigator |
| PAI➣Plan d'Action Incendie (French: Fire Action Plan) |