| Acronym | Definition |
|---|
| PAC | Political Action Committee |
| PAC | Pacific |
| PAC | Parent Advisory Council |
| PAC | Performing Arts Center |
| PAC | Pompe à Chaleur (French: Heat Pump) |
| PAC | Patriot Advanced Capability |
| PAC | Parent Advisory Committee |
| PAC | Particle Accelerator Conference |
| PAC | Public Affairs Committee |
| PAC | Public Affairs Council (Washington, DC) |
| PAC | Portable Air Conditioner |
| PAC | Program Advisory Committee |
| PAC | Public Access Catalog |
| PAC | Policy Advisory Committee (Eumetsat) |
| PAC | Politique Agricole Commune (French: Common Agricultural Policy / European Commission, aka: CAP) |
| PAC | Programa de Aceleração do Crescimento (Portuguese: Growth Acceleration Program; Brazil) |
| PAC | Pan-Africanist Congress (South Africa) |
| PAC | Politica Agricola Comune (Italian: Common Agricultural Policy / European Commission, aka: CAP) |
| PAC | Post-Acute Care (health services) |
| PAC | Powdered Activated Carbon (water treatment) |
| PAC | Pan-African Congress |
| PAC | Pan African Congress |
| PAC | Probably Approximately Correct (paradigm of learning in computational learning theory) |
| PAC | Partido Acción Ciudadana (Citizen Action Party, Costa Rica) |
| PAC | Política Agrícola Comum (Portuguese: Common Agricultural Policy / European Commission, aka: CAP) |
| PAC | Pakistan Aeronautical Complex (Kamra, Pakistan) |
| PAC | Privilege Attribute Certificate |
| PAC | Premature Atrial Contraction |
| PAC | Planned Amortization Class |
| PAC | Partnership Africa Canada |
| PAC | proanthocyanidin |
| PAC | Petites Annonces Classées |
| PAC | Poly-Aluminum Chloride (coagulant) |
| PAC | Plasma Arc Cutting |
| PAC | Pre-Authorized Chequing |
| PAC | Pulmonary Artery Catheterization |
| PAC | Packaging Association of Canada |
| PAC | Polycyclic Aromatic Hydrocarbon |
| PAC | Pacific Accreditation Cooperation |
| PAC | Porting Authorisation Code (telecommunications) |
| PAC | Presentation-Abstraction-Control |
| PAC | Picture Archiving and Communication (radiology) |
| PAC | Prince Alfred College |
| PAC | P1-Derived Artificial Chromosome |
| PAC | Pike Anglers Club (fishing group) |
| PAC | Polyacrylonitrile |
| PAC | Pan American Crossing (undersea FO cable link) |
| PAC | Présence et Action Culturelles (Belgium) |
| PAC | Provincial Armed Constabulary (India) |
| PAC | Plasma Aldosterone Concentration |
| PAC | PPTP Access Concentrator |
| PAC | Physical Acoustics Corporation |
| PAC | Certified Physician Assistant |
| PAC | Problem Animal Control (Massachusetts) |
| PAC | Perceptual Audio Coding |
| PAC | Public Archives of Canada |
| PAC | Pocket Access (Microsoft) |
| PAC | Procurement Assistance Center |
| PAC | Pre-Authorized Contribution |
| PAC | Pre-Authorized Contribution (retirement savings plan, Canada) |
| PAC | Perceptual Audio Coder |
| PAC | Power Aware Computing |
| PAC | Production Activity Control |
| PAC | Proxy Automatic Configuration |
| PAC | Process Analytical Chemistry |
| PAC | Pre-Authorized Check |
| PAC | Parents Are Coming (IM/chat) |
| PAC | Pre-Admission Certification |
| PAC | Personnel Administration Center |
| PAC | Pacific Athletic Conference |
| PAC | Pacific Area Command |
| PAC | Primary Angle Closure |
| PAC | Professional Activities Committee |
| PAC | Plasma Arc Curing (dental technology) |
| PAC | Photoactive Compound |
| PAC | Phenylacetylcarbinol |
| PAC | Partenariat Afrique Canada (French: Partnership Africa Canada) |
| PAC | PCI AGP Controller (Intel) |
| PAC | Provider Advisory Committee |
| PAC | Polycyclic Aromatic Compound |
| PAC | People Against Cancer |
| PAC | Pampanga Agricultural College (Philippines) |
| PAC | Public Access Center |
| PAC | Perfect Authentic Cadence (music) |
| PAC | Phage Artificial Chromosome |
| PAC | Private Access Code |
| PAC | Provisional Acceptance Certificate (construction contracts) |
| PAC | Plan d'Accompagnement des Chômeurs (French: Plan to Assist the Unemployed; Belgium) |
| PAC | Patients' Association of Canada (est. 2007) |
| PAC | Prohibited Alcohol Concentration |
| PAC | Primex Aerospace Company |
| PAC | Pacific Air Command |
| PAC | Patent Assistance Center (USPTO) |
| PAC | Procurement, Acquisition and Construction (NOAA Appropriation Account) |
| PAC | Premature Atrial Complex |
| PAC | Panasonic Academic Challenge |
| PAC | Parent Action Council |
| PAC | Pad Array Carrier |
| PAC | Post Award Conference |
| PAC | Program Acquisition Cost |
| PAC | Parents of Adult Children |
| PAC | Prosecutors Advisory Council |
| PAC | Process Algebra Compiler |
| PAC | Price At Closing |
| PAC | Patient Advocacy Coalition |
| PAC | Pilgrim Area Collaborative |
| PAC | Programmable Analog Chips |
| PAC | Partnership Annual Conference |
| PAC | Political Action Commission |
| PAC | Pre-Authorized Collection (insurance) |
| PAC | Predict Application Control |
| PAC | Petits Animaux de Compagnie |
| PAC | Production Acceptance Certification |
| PAC | Plant Artificial Chromosome |
| PAC | Portland Aquatic Club (Oregon) |
| PAC | Partial Anterior Circulation (stroke) |
| PAC | Puntland AIDS Commission (Somalia) |
| PAC | Proprietary Article Certificate (India) |
| PAC | Physician's Assistant, Certified |
| PAC | Powdered Active Carbon |
| PAC | Personal Access Communication |
| PAC | Personnel and Administrative Center |
| PAC | Pentagon Athletic Club |
| PAC | Platform Adapter Component (Sun Microsystems; NetDynamics) |
| PAC | Platform Applicable Clients (Visual Networks) |
| PAC | Primary Address Code |
| PAC | Power Assurance Check |
| PAC | Password Access Code (Teltronics Vision PBX) |
| PAC | Power Aware Communications |
| PAC | Pilot At Controls |
| PAC | Preliminary Acceptance Certificate |
| PAC | Pediatric AIDS Canada |
| PAC | Polar Atmospheric Chemistry |
| PAC | Problem Action Center |
| PAC | Process Analysis and Chemometrics |
| PAC | Particle Accelerator Control |
| PAC | Professional Advancement Course |
| PAC | Plant Air Compressor |
| PAC | Packard Automobile Classics, Inc. (The Packard Club) |
| PAC | Pilots Association of Canada (Union) |
| PAC | Patient Airlift Center (USAF) |
| PAC | Pay At Consumption (similar to Vendor Managed Inventory, VMI) |
| PAC | Precision Attitude Control |
| PAC | Productivity Automation Concepts (Netherlands) |
| PAC | Pre-Assigned Access Code (Washington State Department of Revenue) |
| PAC | Pseudo-Associative Cache |
| PAC | Peach Autism Center |
| PAC | Proceedings Authorization Committee (Ontario, Canada) |
| PAC | Postauthorization Change (USACE) |
| PAC | Passive Acoustic Classification |
| PAC | Pinpoint Address Code |
| PAC | Preaction Calibration |
| PAC | Participating Associate Contractor |
| PAC | Paiement Automatisé des Cotisations (French: Automated Payment of Dues; Confédération Française Démocratique du Travail) |
| PAC | Probe Array Controller |
| PAC | Price Adjustment Code |
| PAC | Planetarium Association of Canada |
| PAC | Personnel Actions Command (US Army) |
| PAC | Power Assisted Combatant |
| PAC | Past Award Conference |
| PAC | Phase Ambiguity Correction |
| PAC | Prepared Action Case |
| PAC | Patriot Anti Capability |
| PAC | Personal Air Communication Technology (protocol) |
| PAC | Plowshare Advisory Committee |
| PAC | Potentially Adverse Condition |
| PAC | Project Analysis Committee |
| PAC | Preliminary Architectural Concept |
| PAC | Production Acquisition Cost |
| PAC | Packet Access Connection (AT&T) |
| PAC | Prime Athletics Corporation (apparel company; Canton, MA) |
| PAC | Pan-Asian Coalition (game) |
| PAC | Parents Advice Centre (UK) |
| PAC | Project Approval Committee |
| PAC | Programmable Automation Controller |
| PAC | Prime Active Capital (Dublin, Ireland) |
| PAC | Parents and Community (various locations) |
| PAC | Peer Adjustment Center |
| PAC | Public Art Commission (various locations) |
| PAC | Public Advisory Committee |
| PAC | Personal Authorization Code |
| PAC | Plug-In Action Component |
| PAC | Physical Activities Center (various schools) |
| PAC | Portable Altitude Chamber (safety equipment) |
| PAC | Public Accounts Committee (UK) |
| PAC | Professional Advisory Council |
| PAC | Professional Advisory Committee |