| RPA | Racquetball Player Association 
| Others |
| RPA | Radiant Professionals Alliance
| Others |
| RPA | Radical Punk Attack
| Others |
| RPA | Raging Peasant American
| Others |
| RPA | Raising Participation Age
| Others |
| RPA | Raising Public Awareness
| Others |
| RPA | Raising the Participation Age
| Others |
| RPA | Rally Pilot Association
| Others |
| RPA | Ramp Paving Ahead
| Others |
| RPA | Random Phase Approximation
| Others |
| RPA | Rangemaster Precision Arms
| Others |
| RPA | Rating Points Average
| Others |
| RPA | Ravenswood Physician Associates
| Others |
| RPA | Re Published As
| Others |
| RPA | Reactive Polyurothane Adhesive
| Others |
| RPA | Readiness Participation And Application
| Others |
| RPA | Real Property Accountability
| Others |
| RPA | Real Property Administrator
| Others |
| RPA | Real Property Associates
| Others |
| RPA | Rear Body Panel
| Others |
| RPA | Rear Parking Assist
| Others |
| RPA | Recently Promoted A**hole
| Others |
| RPA | Recognition Professionalism Achievement
| Others |
| RPA | Recombinant Protective Antigen
| Others |
| RPA | Record and Playback Assembly
| Others |
| RPA | Recover Point Appliance
| Others |
| RPA | Recycled Paperboard Alliance
| Others |
| RPA | Red Planet Arachnids
| Others |
| RPA | Redmond Proficiency Academy
| Others |
| RPA | Reduced Pressure Assembly
| Others |
| RPA | Refrigerant Purity Analyser
| Others |
| RPA | Regional Plan Association
| Others |
| RPA | Register of Professional Archaeologists
| Others |
| RPA | Register Port Attributes
| Others |
| RPA | Registered Professional Accountant (Canada)
| Others |
| RPA | Registered Professional Adjusters
| Others |
| RPA | Registered Professional Archaeologist
| Others |
| RPA | Reifen Pannen Anzeige
| Others |
| RPA | Reimbursement Plan Administrators
| Others |
| RPA | Relative Positive Acceleration
| Others |
| RPA | Remote Parking Assist
| Others |
| RPA | Remote Password Authentication
| Others |
| RPA | Remote Patron Authentication
| Others |
| RPA | Remote Patron Authorization
| Others |
| RPA | Remotely Piloted Aircraft
| Military, Air Force, Defence, Weapon, Transport, Air Transport |
| RPA | Renal Physicians Association
| Others |
| RPA | Renal Physicians Association's
| Others |
| RPA | Replication Protein A
| Others |
| RPA | Reporting of Public Affairs
| Others |
| RPA | Republika Poludniowej Afryki
| Others |
| RPA | Request for Procurement Action (Authorization)
| Others |
| RPA | Research Plan Action
| Others |
| RPA | Research Publishing Academy (RPA)
| Others |
| RPA | Reserve Pay Account
| Others |
| RPA | Residential Purchase Agreement
| Others |
| RPA | Resistant Pseudomonas aeruginosa
| Others |
| RPA | Resource Planning Act
| Others |
| RPA | Resource Pool Allocation
| Others |
| RPA | Resource Protection Area
| Others |
| RPA | Resource Protection Areas
| Others |
| RPA | Resources Planning Act
| Others |
| RPA | Retail Packaging Association
| Others |
| RPA | Retarding Potential Analyzer
| Others |
| RPA | Retirement Plans Associate
| Others |
| RPA | Retro Passion Automobiles
| Others |
| RPA | Retro Prestige Automobile
| Others |
| RPA | Reusable Packaging Association
| Others |
| RPA | Reusable Petroleum Absorbent
| Others |
| RPA | Revenue Per Action
| Others |
| RPA | Reverse Park Aid
| Others |
| RPA | Rhythmflex Parents Association
| Others |
| RPA | RIB Project Archive
| Others |
| RPA | Richmond Progressive Alliance
| Others |
| RPA | Roadsters of Port Adelaide
| Others |
| RPA | Robb Park Abbey
| Others |
| RPA | Robotic Process
| Others |
| RPA | Robotic Process Automation
| Others |
| RPA | Robotics Process Automation
| Others |
| RPA | Robust Probabilistic Averaging
| Others |
| RPA | Rockefeller Partners Architects
| Others |
| RPA | Rockefeller Philanthropy Advisors
| Others |
| RPA | Rocket Propulsion Analysis
| Others |
| RPA | Role Playing Adventure
| Others |
| RPA | Ronan Psychological Associates
| Others |
| RPA | Rotary Piston Area
| Others |
| RPA | Rotorcraft Pilot's Associate
| Others |
| RPA | Rotterdam Port Authority
| Others |
| RPA | Royal Pembroke Artillery
| Others |
| RPA | Royal Prince Alfred
| Others |
| RPA | Rubin Postaer and Associates
| Others |
| RPA | Ruby Production Archive
| Others |
| RPA | Rupee Payment Area
| Others |
| RPA | Rural Payments Agency
| Others |
| RPA | Rural Payments Agency (formerly Intervention Board for Agricultural Produce)
| Others |
| RPA | Rwandan Patriotic Army
| Others |
| RPA | The Role Players Association
| Others |