| PA | Port Angeles (Washington) | |
| PA | Public Affairs | |
| PA | Para (Brazil) | |
|
| PA | Pará (Brazilian state) | |
| PA | Physician Assistant | |
| PA | Public Address | |
| PA | Public Address system | |
| PA | Princess Anne (high school in Virginia Beach, Virginia) | |
| PA | Public Administration | |
| PA | Pennsylvania (US postal abbreviation) | |
| PA | Port Authority (of NY and NJ) | |
| PA | Press Association (British National News Agency) | |
| PA | Program Administrator | |
|
| PA | Public Assistance | |
| PA | Professional Association | |
| PA | Point A | |
| PA | Parents Association | |
| PA | Physical Activity (health) | |
| PA | Program Announcement | |
| PA | Panama | |
| PA | Pay Attention | |
| PA | Privacy Act | |
| PA | Public Accounting | |
| PA | Points Against | |
| PA | Power of Attorney | |
| PA | People's Association (Singapore) | |
| PA | Personal Assistant | |
| PA | Put Away | |
| PA | Purchasing Agent | |
| PA | Police Academy | |
| PA | Pass Along | |
| PA | Political Affairs (journal of the Communist Party of the United States of America) | |
| PA | Pre Approval (to adopt) | |
| PA | Pan Am (airline) | |
| PA | Phillips Academy (Andover) | |
| PA | Performance Analysis | |
| PA | Palo Alto (California) | |
| PA | Prince Albert (Canada) | |
| PA | Prince Albert (piercing) | |
| PA | Production Assistant (filmmaker) | |
| PA | Production Assistant | |
| PA | Peace Agreement | |
| PA | Program Assistant | |
| PA | Paraguay | |
| PA | Performance Assessment | |
| PA | Pamela Anderson | |
| PA | Project Administrator | |
| PA | Programmer/Analyst | |
| PA | Power-Amplifier | |
| PA | Power Amplifier | |
| PA | Pascal | |
| PA | Palestinian Authority | |
| PA | Penny Arcade (webcomic) | |
| PA | Prior Authorization (Pharmacy Benefits) | |
| PA | Protected Area (conservation) | |
| PA | Pale Ale | |
| PA | Port Adapter (Cisco) | |
| PA | Party Animal | |
| PA | Personal Appearance | |
| PA | Public Announcement | |
| PA | Publishers Association | |
| PA | Planning Authority | |
| PA | Pulmonary Artery | |
| PA | Process Analysis | |
| PA | Policy Analyst | |
| PA | Pakistan Army | |
| PA | Professional Associates | |
| PA | Publish America (book publisher) | |
| PA | Per Annum | |
| PA | Paralegal | |
| PA | Polk Audio | |
| PA | Plein Air (Quebec) | |
| PA | Power Act (gaming) | |
| Pa | Pali (linguistics) | |
| PA | Paisley (postcode, United Kingdom) | |
| PA | Personal Accident (insurance) | |
| PA | Performance Appraisal | |
| PA | Project Architect | |
| PA | Public Appearance | |
| PA | Process Automation | |
| PA | Personnel Action | |
| PA | Preliminary Assessment | |
| PA | Point d'Appui (French: Support Point) | |
| PA | Parental Advisory | |
| PA | Passive Aggressive (behavioral health) | |
| PA | Personnel Administration (various organizations) | |
| PA | Philippine Army | |
| PA | Preferred Alternative | |
| PA | Psychoanalysis | |
| PA | Process Area | |
| PA | Phonological Awareness | |
| PA | Project Accounting | |
| PA | Program Access | |
| PA | Post-Apocalyptic | |
| PA | Bureau of Public Affairs | |
| PA | People's Alliance | |
| PA | Plasminogen Activator (biochemistry) | |
| PA | Perfect Attendance | |
| PA | Problem Analysis | |
| PA | Pseudomonas aeruginosa (bacteria) | |
| PA | Planet of the Apes (movie) | |
| PA | Polyamide | |
| PA | Pernicious Anemia | |
| PA | Public Aid (Medicaid) | |
| PA | Pregnancy-Associated | |
| PA | Practicing Attorney | |
| PA | Project Analyst | |
| PA | Pharmacological Action (US NIH) | |
| PA | Phthalic Anhydride (organic compound) | |
| PA | Patients Association (UK) | |
| PA | Penny Arcade (comic strip) | |
| PA | Psoriatic Arthritis | |
| PA | Punk Ass | |
| PA | Peace Arch (US/Canada border) | |
| PA | Picatinny Arsenal | |
| PA | Precautionary Approach (fisheries) | |
| PA | Playahead (Internet community) | |
| PA | Pantothenic Acid | |
| PA | Position Angle (astronomy) | |
| PA | Plate Appearance (Baseball) | |
| PA | Private Adoption | |
| PA | Preferential Attachment (mathematics) | |
| PA | Point Analysis | |
| PA | Project Assessment | |
| PA | Protactinium | |
| PA | Protective Antigen (microbiology) | |
| PA | Pollution Abatement | |
| PA | Persistent Asthma | |
| PA | Particle Accelerator | |
| PA | Press Agent | |
| PA | Personal Adviser | |
| PA | Paying Agent | |
| PA | Porte-Avions (French, aircraft carrier) | |
| PA | Pinkerton Academy (New Hampshire) | |
| PA | Private Account | |
| PA | Pancreatic Adenocarcinoma | |
| PA | Plant Air | |
| PA | Pax Americana | |
| PA | Personalausweis (German: identity card) | |
| PA | Preparing Activity | |
| PA | Processing Activities | |
| PA | Protocol Analyzer | |
| PA | Programmatic Agreement (USACE) | |
| PA | Posterior Anterior (radiology) | |
| PA | Predictive Analysis | |
| PA | Project Agreement | |
| PA | Product Assurance | |
| PA | Palermo, Sicilia (Italian province) | |
| PA | Precision Approach (avionics) | |
| PA | Pressure Altitude | |
| PA | Power Automation | |
| PA | Policy Article (medical policy) | |
| PA | Production Agency | |
| PA | Property Administrator | |
| PA | Phantom Assassin (gaming) | |
| PA | Preventative Action | |
| PA | Preferred Address | |
| PA | Proanthocyanidin (flavanol class) | |
| PA | Permit Authority | |
| PA | Prohibited Areas | |
| PA | Prednisolone Acetate (eye medication; usually followed by %) | |
| PA | Polyacryl | |
| PA | Personal Alarm | |
| PA | Partial Agreement | |
| PA | Political Agent (Pakistan) | |
| PA | Peer Advisor | |
| PA | Potential Equalisation | |
| PA | Provider Aggregatable (Internet Provider addresses) | |
| PA | Personal Agent | |
| PA | Public Attorney | |
| PA | Partner Association | |
| PA | Pathologists' Assistant | |
| PA | Planetarion (online game) | |
| PA | Performance Assurance | |
| PA | Pension Adjustment | |
| PA | Pressure Alarm | |
| PA | Proxy Agreement | |
| PA | Precision Attack | |
| PA | Pending Availability | |
| PA | Programming Assistant (campus residential officer) | |
| PA | Post Adjutant | |
| PA | Program Authorization | |
| PA | Propionic Acidemia | |
| PA | Principal Administrator | |
| PA | Pilote Automatique (French: Autopilot) | |
| PA | Project Authorization | |
| PA | Proponent Agency | |
| PA | Project Audit | |
| PA | Privacy Advocate | |
| PA | Perfect Attack (gaming, Dance Dance Revolution) | |
| PA | Prosecution Attorney | |
| PA | Pastoral Assistant | |
| PA | Privatization Agency | |
| PA | Producing Ability (breeding) | |
| PA | Public Audio | |
| PA | Proof Assistant | |
| PA | Parliamentary Assistant (Ontario Government) | |
| PA | Pooling Administrator | |
| PA | Pepper-Ann (TV show) | |
| PA | Professional Audio System | |