| Prepare to Abandon Platform Alarm | Academic & Science |
| Persona, Audience, Purpose, Author | Academic & Science |
| Peninsula Advertising Photographers Association | Business |
| Peekskill Area Pastors Association | Community |
| Political Asylum Project of Austin | Community |
| Park Adapt Prepare and Act | Community |
| Performers Artists Parents and Advocates | Community |
| Pesticide Applicators Professional Association | Community |
| Professional and Amateur Pinball Association | Community |
| Public Access Preservation Association | Community |
| Privacy, Accuracy, Property, Accessibility | Computing |
| PAPA DAO | Cryptocurrency |
| Phoenix Automotive Press Association | General |
| Purdue Automotive Performance Association | General |
| Piedmont Antique Power Association | General |
| Passion Auto Prestige et Ancienne | General |
| Professional Aerial Photographers Association | General |
| Plan Ahead Path Algorithm | General |
| Plein Air Painters of America | General |
| Phoenixville Area Positive Alternatives | General |
| People Aligned in Positive Action | General |
| Pump Activated Pressure Amplifier | General |
| Pump Activated Pressure Amplifer | General |
| Privacy Accuracy Property and Accessibility | General |
| Premature Accelerated Physiological Aging | General |
| Privacy Accessibility Property and Authentication | General |
| Programmer And Probability Analyzer | General |
| Paducah Area Painters Alliance | Governmental |
| Parenting And Paternity Awarness | Medical |
| Parenting and Paternity Awareness | Medical |
| Pedispheroidal Amateur Prognostication Association | Sports |
