| A.P.P. | Additional Public Prosecutor 
| Others |
| APP | A Posteriori Probability
| Others |
| APP | Abdominal Perfusion Pressure
| Others |
| APP | Absolute Power Productions
| Others |
| APP | Academic Policy and Programs
| Others |
| APP | Academic Purchase Program
| Others |
| APP | Accelerated Progress Program
| Others |
| APP | Accelerator Pedal Position
| Others |
| APP | Accelerator Pedal Postion
| Others |
| APP | Accessible Parking Permit
| Others |
| APP | Accredited Presales Professional
| Others |
| APP | Accredited Purchasing Practitioner
| Others |
| APP | Acoustic Pedestrian Protection
| Others |
| APP | Actinobacillus Pleuropneumoniae
| Others |
| APP | Acute-Phase Protein
| Others |
| APP | Adjusted Peak Performance
| Others |
| APP | Adoption Pay Period
| Others |
| APP | Advanced Page Processing
| Others |
| APP | Advanced Performance Parts
| Others |
| APP | Advanced Placement Program
| Others |
| APP | Advanced Practice Provider
| Others |
| APP | Advanced Procurement Plan
| Others |
| APP | Advanced Production Planning
| Others |
| APP | Africa Progress Panel
| Others |
| APP | Ah Pek Plant
| Others |
| APP | Alan Parsons Project
| Others |
| APP | Alcon Practice Performance
| Others |
| APP | Algebraic Path Problem
| Others |
| APP | All People's Party
| Others |
| APP | Allied Procedural Publication
| Others |
| APP | Allied Procedural Publications
| Others |
| APP | Alternative Payment Program
| Others |
| APP | Alzheimer Precursor Protein
| Others |
| APP | Amg Performance Package
| Others |
| APP | Amplifier Power Provisioning
| Others |
| APP | Amyloid Precurser Protein
| Others |
| APP | Amyloid Precursor Protein
| Others |
| APP | Ancient Puebloan People
| Others |
| APP | Anti Powerpoint Party
| Others |
| App | Appalachian State University
| Others |
| APP | Appears
| Others |
| APP | Appendix
| Others |
| APP | Appendix APP Application
| Others |
| APP | Appetizer
| Others |
| APP | Applecare Protection Plan
| Others |
| app | Applicandus
| Others |
| App | Application
| Others |
| APP | Application APP Approved
| Others |
| APP | Application Defined Packet
| Others |
| APP | Application Portability Profile
| Others |
| APP | Applications Portability Profile
| Others |
| APP | Appointment
| Others |
| APP | Approach
| Others |
| APP | Approximate
| Others |
| APP | Aqua Perla Pelli
| Others |
| APP | Army Procurement Procedures
| Others |
| APP | Arunachal Pradesh Police
| Others |
| APP | As Per Protocol
| Others |
| APP | Asapa, Papua New Guinea
| Others |
| APP | Asbury Park Press
| Others |
| APP | Asia Pulp & Paper Co., Ltd.
| Others |
| APP | Asia Pulp and Paper
| Others |
| APP | Assessing Pupil Progress
| Others |
| APP | Asset Purchase Programme
| Others |
| APP | Assistant Public Prosecutor
| Others |
| APP | Associated Press of Pakistan
| Others |
| APP | Association of Paddlesurf Professionals
| Others |
| APP | Association of Partnership Practitioners
| Others |
| APP | Association of Professional Piercers
| Others |
| APP | Asynchronous Pluggable Protocol
| Others |
| APP | Atactic Poly Propylene
| Others |
| APP | Atom Publishing Protocol
| Others |
| APP | Attack Prize Plus
| Others |
| APP | Audio Psycho Phonology
| Others |
| APP | Australian Pharmacy Professional
| Others |
| APP | Australian Protectionist Party
| Others |
| APP | Autoliv Partner Portal
| Others |
| APP | Automatic Page Positioning
| Others |
| APP | Automatic Payment Program
| Others |
| APP | Automobile Purchase Plan
| Others |
| APP | Automotive Performance Parts
| Others |
| APP | Average Pensionable Pay
| Others |
| APP | Average Physical Product
| Others |
| APP | Average Purchase Price
| Others |
| APP | Axial Piston Pump
| Others |
| APP | dBASE Application Generator APPlication object file
| Others |
| APP | DR-DOS Executable APPlication file
| Others |
| APP | FoxPro Generated APPlication
| Others |
| APP | Office of Airport Planning and Programming
| Others |
| APP | Symphony Add-in APPlication file
| Others |