| Acronym | Definition |
|---|
| APS | American Psychological Society |
| APS | Advanced Photographic System |
| APS | Albuquerque Public Schools (New Mexico) |
| APS | American Physiological Society |
| APS | Australian Psychological Society |
| APS | American Physical Society |
| APS | Arizona Public Service (utility company) |
| APS | Australian Public Service |
| APS | Adult Protective Services |
| APS | Aurora Public Schools (Aurora, CO) |
| APS | Association for Psychological Science (Washington, DC) |
| APS | American Pain Society |
| APS | Arlington Public Schools (Virginia) |
| APS | Advanced Photon Source |
| APS | Advanced Planning and Scheduling (resource planning) |
| APS | Advanced Photo System |
| APS | American Philatelic Society |
| APS | Automatic Protection Switching (SONET/SDH) |
| APS | American Philosophical Society |
| APS | Adobe Photoshop |
| APS | American Phytopathological Society (St. Paul, MN) |
| APS | Advanced Power System (battery systems) |
| APS | Amount Per Serving |
| APS | Antiphospholipid Antibody Syndrome |
| APS | Aerial Port Squadron |
| APS | Antiphospholipid Syndrome |
| APS | Agence de Presse Sénégalaise (French: Senegalese News Agency) |
| APS | Advanced Planning & Scheduling |
| APS | Avant-Projet Sommaire (French: Preliminary Project Summary) |
| ApS | Anpartsselskab (Danish: private limited liability company) |
| APS | Active-Pixel Sensor |
| APS | Adenosine 5'-Phosphosulfate (chemistry) |
| APS | Australian Protective Service |
| APS | Autorisation Provisoire de Séjour (French: Temporary Residence Permit) |
| APS | Automatic Protection Switch |
| APS | Advanced Planning System (USAF) |
| APS | Alt Preset Standard (MP3 encoder preset) |
| APS | Accredited Platform Specialist |
| APS | Advertiser and Publisher Solutions (Microsoft group) |
| APS | American Psychosomatic Society |
| APS | Algérie Presse Service |
| APS | Activité Physique et Sportive (French: Physical Activity and Sport) |
| APS | Analog Protection System |
| APS | Administratie Planning en Statistiek (Belgium) |
| APS | American Peptide Society |
| APS | Aboriginal Peoples Survey (Statistics Canada) |
| APS | Authorization Proxy Server (NTLM) |
| APS | Attending Physician's Statement (insurance) |
| APS | Air Pressure Switch |
| APS | Air Plasma Spray (surface coating technology) |
| APS | American Paraplegia Society |
| APS | Accounts Payable System |
| APS | Auto-Pilot System |
| APS | Ammonium Persulphate |
| APS | Associação Portuguesa de Surdos (Portuguese: Portuguese Association of the Deaf; est. 1956) |
| APS | Auxiliary Power System |
| APS | Ad-Hoc Positioning System |
| APS | Asynchronous Protocol Specification |
| APS | Automated Patent System |
| APS | Autoimmune Polyendocrinopathy Syndrome |
| APS | Automated Packaging Systems, Inc (Streetsboro, OH) |
| APS | Academy of Pharmaceutical Sciences (UK) |
| APS | Army pre-positioned stocks (US DoD) |
| APS | Alameda Padre Serra |
| APS | Auxiliary Propulsion System |
| APS | Augmented Protein System |
| APS | Afloat Planning System |
| APS | Army Postal Service |
| APS | Active Protective System |
| APS | Arbeitsgemeinschaft für Pädiatrische Stoffwechselstörungen (Association of Pediatric Metabolic Disorders) |
| APS | American Protective Services |
| APS | Alpha-Particle Spectrometer |
| APS | American Peony Society |
| APS | American Pomological Society |
| APS | Appearance Potential Spectroscopy |
| APS | Automatic Programming System |
| APS | Automated Planning System |
| APS | Association of Planning Supervisors |
| APS | Amplifier Power Supply |
| APS | Apostrophe Protection Society |
| APS | Automatic Protection System |
| APS | Aquitaine Presse Service (French: Aquitaine Press Service; Aquitaine, France) |
| APS | Assured Produce Scheme |
| APS | Arrival Pilot Station (shipping) |
| APS | Applied Psychometric Society |
| APS | Academic Physician & Scientist |
| APS | Accessory Power Supply |
| APS | Association of Police Surgeons |
| APS | American Payment Systems, Inc. |
| APS | Automated Procurement System |
| APS | Antigen, Prostate-Specific |
| APS | Accelerator Position Sensor (automotive) |
| APS | Alternative Powertrain Study (JD Power and Associates) |
| APS | Agricultural Production System |
| APS | Aerosol Particle Sizer |
| APS | Acting Police Sergeant (UK) |
| APS | Anderson Primary School (Singapore) |
| APS | Association of Productivity Specialists |
| APS | Australian Photographic Society Inc |
| APS | Acute Psychiatry Service |
| APS | Advanced Polar System |
| APS | Automated Personnel System |
| APS | Automated Payload Switch |
| APS | Antenna Positioning System |
| APS | Alarme Protection Sécurité (French: Security Alarm Protection) |
| APS | Antian Professional Services Inc (Ottawa, ON, Canada) |
| APS | Advanced Proton Source |
| APS | Acoustic Processing System |
| APS | Attached Processor System (4ESS) |
| APS | Alternative Press Syndicate |
| APS | Acute-Phase Serum |
| APS | Association of Professionals and Supervisors (Montreal, Quebec, Canada) |
| APS | Application Production Support |
| APS | Automatic Pointing System |
| APS | Atmospheric Process Simulator (distributed computing program, weather research) |
| APS | Afloat Pre-Positioning Ships |
| APS | Algemeen Preferentiestelsel (Dutch = General Preferred System) |
| APS | Assurance Prospection Simplifiée (French: Insurance Prospecting Simplified) |
| APS | Aircraft Parts Store (USAF Supply Squadron) |
| APS | Arya Pratinidhi Sabha (South Africa) |
| APS | Advanced Power Source |
| APS | Adjustment Processing System (USPS) |
| APS | Agence Prévention et Sécurité (French: Prevention and Security Agency; Belgium) |
| APS | Acquisition Processor Subsystem (NASA) |
| APS | Array Processing System |
| APS | Admiralty Primary School (Singapore) |
| APS | Advance Planning Study |
| APS | Abuse Prevention Service |
| APS | Active Phase Shifter |
| APS | Army Prepositioned Sets |
| APS | Academia del Perpetuo Socorro (Puerto Rican college preparatory private school) |
| APS | Advance Planning Solutions, Inc. |
| APS | Acquisition Planning System |
| APS | Adaptive Processor, SONAR |
| APS | Actions Préventives de Secours (French: Preventive Actions Relief; Belgium) |
| APS | Avionics Processing System |
| APS | Association of Professional Sikhs |
| APS | Army Planning System |
| APS | Accident Prone Situation |
| APS | Albury Public School (New South Wales, Australia) |
| APS | Average Per Store |
| APS | Application Program Set |
| APS | Acoustic Projection System |
| APS | Asset Protection Service LLC (Chantilly, VA) |
| APS | Autocorrelated Photon Spectroscopy |
| APS | Axial Power Shape |
| APS | Automated Purchase System |
| APS | Algorithm Performance Specification |
| APS | Argonne Photo Source |
| APS | Association Professionnelle Sucrière (French: Professional Sugar Association; Morocco) |
| APS | Association Prudence au Sahel (Burkina Faso) |
| APS | Authorization Planning Schedule |
| APS | Afloat Processing System |
| APS | Allied Process Services, Inc. (Madison, AL) |
| APS | Afloat Prepositioned Squadron |
| APS | Adventist Payroll System (software) |
| APS | Autogenous Pressurization System (missiles) |
| APS | Airborne Pointing System |
| APS | Autocorrelation Photon Spectroscopy |
| APS | Automatic Patching System |
| APS | Acquisition Program Sponsor |
| APS | Alarm Processing Subsystem |
| APS | Alphanumeric Photocomposer System |
| APS | Annuitant Pay Subsystem |
| APS | Albany Publication System (MCLB Albany) |
| APS | Aktiebolaget Produktion Service (Swedish: stamp-perforator machine) |
| APS | Automatic Polarity Selection |
| APS | Applications Process Subsystem |
| APS | Aluminium Cell Preheating System |
| APS | Atmospheric Properties System |
| APS | Argonne Peak Shave (Model) |
| APS | Auxiliary Police Section (NYPD) |
| APS | Applied Physics Services (Philadelphia, PA) |
| APS | Asociación Proyecto Sacatepequez (Sacatepequez Project Association) |
| APS | Applied Problem Session |
| APS | Auto Policyholder System (insurance) |
| APS | Auto Phasing System |
| APS | Automatic Program Scheduler |
| APS | Automation Plans & Support |
| APS | Alternate Propulsion Sources |
| APS | Allied Professional System |
| APS | aerobic pretreatment simulator |
| APS | Academic Planning Service |
| APS | Automatic Program Service |
| APS | Absolutely Precious Skin (beauty product brand) |
| APS | Aircraft Propeller Service, Inc (Wheeling, IL) |
| APS | Aurora Picture Show (Houston, TX) |
| APS | Advanced Performance Solutions, LLC (Amherst, NY) |
| APS | Analytical Problem Solving (various organizations) |
| APS | Animal Production System (various organizations) |
| APS | Ancillary Products and Services |
| APS | Academic Programs and Services (various schools) |
| APS | Associated Press Stylebook |
| APS | A Piece of Space (Japan) |
| APS | Astrophysical and Planetary Sciences (University of Colorado) |
| APS | Average Particle Size |
| APS | Auxiliary Power Supply |
| APS | Admissions and Partnership Services (UK) |
| APS | Audio Preservation Studio (Harvard University; Boston, MA) |
| APS | Average Point Score (education; UK) |
| APS | Animal Protection Society (various locations) |
| APS | Allison Payment Systems (Indianapolis, IN) |
| APS | Applied Plant Sciences (study program) |
| APS | Active People Survey (athletics; UK) |
| APS | Atomic Power Station |
| APS | Academy of Political Science (New York) |
| APS | Austin Pond Society (Austin, TX) |
| APS | Advanced Production Scheduling |
| APS | Application Platform Strategies |