| PIA | Pain In A 
| Others |
| PIA | Pain In A**
| Others |
| PIA | Pain In the A**
| Others |
| PIA | Paint, Ink, and Adhesives
| Others |
| PIA | Pakistan International Airline
| Others |
| PIA | Pakistan International Airways
| Others |
| PIA | Parachute Industry Association
| Others |
| PIA | Parachuting Industry Association
| Others |
| PIA | Parallel Interface Adapter
| Others |
| PIA | Parole In Absentia
| Others |
| PIA | Partner In Angelicuss
| Others |
| PIA | Partnership Intermediary Agreements
| Others |
| PIA | Pass It Around
| Others |
| PIA | Passport Issuing Authority
| Others |
| PIA | Peninsula Internet Academy
| Others |
| PIA | People In Action
| Others |
| PIA | Peoplesoft Internet Architecture
| Others |
| PIA | Peoria International Airport
| Others |
| PIA | Peoria International Airport, Peoria, Illinois USA
| Others |
| PIA | Performance Improvement Analyst
| Others |
| PIA | Perhaps it Arrives
| Others |
| PIA | Periodistas de la Industria Automotriz
| Others |
| PIA | Peripheral Interface Adapter
| Others |
| PIA | Permanent Interactive Anamorphic
| Others |
| PIA | Personal Injury Accident
| Others |
| PIA | Personal Insolvency Arrangement
| Others |
| PIA | Personal Internet Appliance
| Others |
| PIA | Personal Investment Authority
| Others |
| PIA | Petroleum Industry Association
| Others |
| PIA | Philippine Information Agency
| Others |
| PIA | Pittsburgh Institute of Aeronautics
| Others |
| PIA | Planned Incremental Availability
| Others |
| PIA | Plantscape Institute of America
| Others |
| PIA | Platform for Information Applications
| Others |
| PIA | Please Inform Allah
| Others |
| PIA | Plug-In Administrator
| Others |
| PIA | Plug-In Architecture
| Others |
| PIA | Poliqon Informasiya Agentliyi
| Others |
| PIA | Porsche Inter Auto
| Others |
| PIA | Post Investment Analysis
| Others |
| PIA | Prayers In the Air
| Others |
| PIA | Pre-Installation Acceptance
| Others |
| PIA | Primary Immunodeficiency Association
| Others |
| PIA | Primary Insurance Amount
| Others |
| PIA | Primary Interop Assembly
| Others |
| PIA | Princeton In Asia
| Others |
| PIA | Principal Investment Area
| Others |
| PIA | Printing and Imaging Association
| Others |
| PIA | Printing Industries Alliance
| Others |
| PIA | Printing Industries Association
| Others |
| PIA | Printing Industries of America
| Others |
| PIA | Prison Industry Authority
| Others |
| PIA | Privacy Impact Assessment
| Others |
| PIA | Privacy Impact Assessments
| Others |
| PIA | Private Internet Access
| Others |
| PIA | Pro Islamic Alliance
| Others |
| PIA | Process Instrumentation and Analytics
| Others |
| PIA | Professional Insurance Agents
| Others |
| PIA | Professional Intermediary and Agent
| Others |
| PIA | Program Integrity Assurance
| Others |
| PIA | Program of Integrative Assignments
| Others |
| PIA | Programme of Integrative Assignments
| Others |
| PIA | Project Impact Analysis
| Others |
| PIA | Project Initiation Agreement
| Others |
| PIA | Project Innovation Awards
| Others |
| PIA | Proliferative Inflammatory Atrophy
| Others |
| PIA | Property Investors Alliance
| Others |
| PIA | Proprietary Information Agreement
| Others |
| PIA | Protection Innovation and Automation
| Others |
| PIA | Protzek instrumental analytics
| Others |
| PIA | Provider Information Assessment
| Others |
| PIA | PTS-Independent Antitermination
| Others |
| PIA | Public and International Affairs
| Others |
| PIA | Public Info Attack
| Others |
| PIA | Public Internet Access
| Others |