| Acronym | Definition |
|---|
| PA | Pennsylvania (US postal abbreviation) |
| PA | Physician Assistant |
| PA | Public Address |
| PA | Purchasing Agent |
| PA | Para (Brazil) |
| PA | Pará (Brazilian state) |
| PA | Panama |
| PA | Paraguay |
| PA | Pre Approval (to adopt) |
| PA | Palo Alto (California) |
| PA | Power Amplifier |
| PA | Pascal |
| PA | Public Affairs |
| PA | Per Annum |
| PA | Palestinian Authority |
| PA | Pay Attention |
| PA | Paisley (postcode, United Kingdom) |
| PA | Paralegal |
| PA | Point A |
| PA | Public Administration |
| PA | Pamela Anderson |
| PA | Port Authority (of NY and NJ) |
| PA | Privacy Act |
| Pa | Pali (linguistics) |
| PA | Power of Attorney |
| PA | Port Angeles (Washington) |
| PA | Plate Appearance (Baseball) |
| PA | Power-Amplifier |
| PA | Put Away |
| PA | Personal Assistant |
| PA | Police Academy |
| PA | Performance Analysis |
| PA | Professional Association |
| PA | Press Association (British National News Agency) |
| PA | Prince Albert (Canada) |
| PA | Pass Along |
| PA | Pan Am (airline) |
| PA | Publishers Association |
| PA | Polyamide |
| PA | Prince Albert (piercing) |
| PA | Peace Agreement |
| PA | Psychoanalysis |
| PA | Public Assistance |
| PA | Plein Air (Quebec) |
| PA | Prior Authorization (Pharmacy Benefits) |
| PA | Pseudomonas aeruginosa (bacteria) |
| PA | Policy Analyst |
| PA | Bureau of Public Affairs |
| PA | Princess Anne (high school in Virginia Beach, Virginia) |
| PA | Political Affairs (journal of the Communist Party of the United States of America) |
| PA | Programmer/Analyst |
| PA | Planet of the Apes (movie) |
| PA | Process Analysis |
| PA | Performance Assessment |
| PA | Project Architect |
| PA | Penny Arcade (webcomic) |
| PA | Public Accounting |
| PA | Pulmonary Artery |
| PA | Production Assistant |
| PA | Pale Ale |
| PA | Protected Area (conservation) |
| PA | Psoriatic Arthritis |
| PA | Production Assistant (filmmaker) |
| PA | Parents Association |
| PA | Penny Arcade (comic strip) |
| PA | Points Against |
| PA | Program Administrator |
| PA | Program Announcement |
| PA | Performance Appraisal |
| PA | Personal Appearance |
| PA | Preliminary Assessment |
| PA | Public Announcement |
| PA | Program Assistant |
| PA | Public Address system |
| PA | Parental Advisory |
| PA | Post-Apocalyptic |
| PA | Position Angle (astronomy) |
| PA | Port Adapter (Cisco) |
| PA | Public Aid (Medicaid) |
| PA | Party Animal |
| PA | Punk Ass |
| PA | Public Appearance |
| PA | Polk Audio |
| PA | Peace Arch (US/Canada border) |
| PA | Perfect Attendance |
| PA | Particle Accelerator |
| PA | Policy Article (medical policy) |
| PA | Personal Accident (insurance) |
| PA | Personalausweis (German: identity card) |
| PA | Planning Authority |
| PA | Pantothenic Acid |
| PA | Problem Analysis |
| PA | Playahead (Internet community) |
| PA | Phillips Academy (Andover) |
| PA | Program Access |
| PA | Picatinny Arsenal |
| PA | Project Administrator |
| PA | Preferred Alternative |
| PA | Project Accounting |
| PA | Protactinium |
| PA | Publish America (book publisher) |
| PA | Pakistan Army |
| PA | Pancreatic Adenocarcinoma |
| PA | Pollution Abatement |
| PA | People's Alliance |
| PA | Personnel Action |
| PA | Paying Agent |
| PA | Pax Americana |
| PA | Personal Adviser |
| PA | Protective Antigen (microbiology) |
| PA | Pinkerton Academy (New Hampshire) |
| PA | Press Agent |
| PA | People's Association (Singapore) |
| PA | Porte-Avions (French, aircraft carrier) |
| PA | Protocol Analyzer |
| PA | Preparing Activity |
| PA | Privatization Agency |
| PA | Point Analysis |
| PA | Persistent Asthma |
| PA | Power Act (gaming) |
| PA | Philippine Army |
| PA | Patients Association (UK) |
| PA | Private Account |
| PA | Palermo, Sicilia (Italian province) |
| PA | Performance Assurance |
| PA | Process Area |
| PA | Programmatic Agreement (USACE) |
| PA | Processing Activities |
| PA | Project Analyst |
| PA | Predictive Analysis |
| PA | Peer Advisor |
| PA | Professional Associates |
| PA | Power Automation |
| PA | Pension Adjustment |
| PA | Project Assessment |
| PA | Pressure Altitude |
| PA | Personal Alarm |
| PA | Private Adoption |
| PA | Perfect Attack (gaming, Dance Dance Revolution) |
| PA | Precision Approach (avionics) |
| PA | Project Agreement |
| PA | Posterior Anterior (radiology) |
| PA | Preventative Action |
| PA | Product Assurance |
| PA | Permit Authority |
| PA | Plant Air |
| PA | Property Administrator |
| PA | Preferred Address |
| PA | Personal Agent |
| PA | Pending Availability |
| PA | Partial Agreement |
| PA | Planetarion (online game) |
| PA | Polyacryl |
| PA | Prednisolone Acetate (eye medication; usually followed by %) |
| PA | Privacy Advocate |
| PA | Pooling Administrator |
| PA | Principal Administrator |
| PA | Public Audio |
| PA | Precision Attack |
| PA | Project Authorization |
| PA | Pilote Automatique (French: Autopilot) |
| PA | Propionic Acidemia |
| PA | Political Agent (Pakistan) |
| PA | Pathologists' Assistant |
| PA | Production Agency |
| PA | Participatory Appraisal |
| PA | Pressure Alarm |
| PA | Proof Assistant |
| PA | Program Authorization |
| PA | Pepper-Ann (TV show) |
| PA | Prohibited Areas |
| PA | Project Audit |
| PA | Public Attorney |
| PA | Producing Ability (breeding) |
| PA | Provider Assigned (IP address space assigned to a specific provider by IANA) |
| PA | Picoampere |
| PA | Procurement Army |
| PA | Prosecution Attorney |
| PA | Payroll Area |
| PA | Proponent Agency |
| PA | Programmed Amount (USACE) |
| PA | Pastoral Assistant |
| PA | Proton Affinity |
| PA | Programming Assistant (campus residential officer) |
| PA | Parliamentary Assistant (Ontario Government) |
| PA | Progressão Aritmética |
| PA | Post Adjutant |
| PA | Passenger Address |
| PA | Partner Association |
| PA | Paper Advance |
| PA | Perverted Ass |
| PA | Partido Arnulfista (Arnulfista Party, Panama) |
| PA | Production Acceptance |
| PA | Passenger Announcement (airlines) |
| PA | Performing Activity (CEFMS) |
| PA | Pierce Armor (Age of Kings game) |
| PA | Physical Affair |
| PA | Photoinduced Absorption |
| PA | Physician's Association |
| PA | Professional Audio System |
| PA | Polar Air Mass |
| PA | Pastoral Administrator |
| PA | Pseudomonas Aeruginosa Lectin |
| PA | Project Arrangement |
| PA | Position Approximate |
| PA | Professor's Assistant |
| PA | Parti de l'Action (French: Action Party, Morocco) |
| PA | Paulus Apostolus (Apostol Paul) |
| PA | Parapsychological Association, Inc (Petaluma, California) |
| PA | Procurement Authorization |
| PA | Procurement Appropriation |
| PA | Product Accumulate (linear code) |
| PA | Pre-Arbitrated |
| PA | Payload Accommodations |
| PA | Proxy Agreement |
| PA | Pre-Auditing |
| PA | Preplaced-Aggregate (concrete) |
| PA | Perforate Artery (Darke Age of Camelot game) |
| PA | Pride Africa (Herndon, VA) |
| PA | Premier Agendas, Inc. (US) |
| PA | Pass-through Applications |
| PA | Putt and Approach (disc golf) |
| PA | Pass Aggressive (Front Page Sports Football '95 et al) |
| PA | Physical Abuse/Assault |
| PA | Peano Arithmetics |
| PA | Produktaansprakelijkheid (Dutch: product responsibility) |
| PA | Perverts Anonymous |
| PA | Pokémon Aaah! (website) |
| PA | Paralyzed Age (band) |
| PA | Platinum Aero (band) |
| PA | Process Allocator |
| PA | Patronato Antialcohólico (Guatemala) |
| PA | Prune Agar |
| PA | Plaza Automotriz (Guatemala car dealer) |
| PA | Paniagua y Asociados (Guatemala, consulting agency) |
| PA | Position Adaptivity |
| PA | Procurement Aide/Assistant |
| PA | Paramedic's Assistant |
| PA | Persisting to an Older Age |
| PA | Program Account/Allocation |
| PA | Purchasing Aide/Assistant |