APS

APS or Aps or aps or similar may mean:

Education

 * Army Public School, groups of army schools in India and Pakistan
 * APS Netherlands, or APS International, a Dutch educational non-governmental organization
 * Abbottabad Public School and College
 * Albuquerque Public Schools, the largest school district in the State of New Mexico
 * Arlington Public Schools
 * Assisted Places Scheme
 * Associated Public Schools of Victoria, a group of elite independent schools in Victoria, Australia
 * Atlanta Public Schools

Places

 * Anápolis, Goiás, Brazil, from its IATA airport code
 * Apsley railway station, Apsley, England, from its National Rail code
 * Alba-la-Romaine, Ardèche, France, known as Aps until 1904

Science and medicine

 * adenosine 5´ phosphosulfate, a substrate used in pyrosequencing
 * Ammonium persulfate, oxidizing agent
 * Advanced Photon Source, a synchrotron X-ray source at Argonne National Laboratory
 * Algebra of physical space
 * American Physical Society
 * American Physiological Society
 * American Phytopathological Society
 * Ammonium Persulfate, a substrate used in Western blot gels
 * Antiphospholipid syndrome
 * Apus (constellation), constellation abbreviation, as standardized by the International Astronomical Union
 * Association for Psychological Science
 * Attending physician's statement
 * Australian Psychological Society
 * Autoimmune polyendocrine syndrome

Computing and technology

 * Application Packaging Standard
 * Autoprotection switching, a computer networking system
 * Active pixel sensor
 * Active protection system, active hard drive protection used on IBM/Lenovo ThinkPad laptop computers
 * Advanced Photo System, photography
 * Assembly Programming System
 * Asynchronous Protocol Specification, or X.445, a telecommunications standard
 * Atmospheric Plasma Spray, a thermal spraying technique
 * Application Support sublayer of the ZigBee communication protocol specification

Weaponry

 * APS Stechkin, Russian machine pistol.
 * APS amphibious rifle
 * Active protection system, a system to protect tanks from anti-tank guided missiles

Transport

 * Accessible Pedestrian Signal
 * Acoustic Parking System
 * Alimentation par Sol, a system for delivering third-rail electrical power to trams
 * Autopilot system
 * APS, US Navy Hull classification symbol for a transport submarine

Organizations, media and firms

 * ASTRA Platform Services
 * Aborigines' Protection Society
 * Adult Protective Services
 * Alternative Press Syndicate, formerly Underground Press Syndicate
 * American Philatelic Society, or their postage stamp authentication service
 * American Philosophical Society
 * American Public Television, formerly American Program Service
 * Arizona Public Service, an electric power company
 * Armenian Professional Society
 * Army Public School, group of Army schools India
 * Association for Psychological Science
 * Australian Public Service
 * Australian Federal Police Protective Service, formerly Australian Protective Service
 * Austrian Peace Service

Miscellaneous

 * Acting Police Sergeant
 * Advanced planning and scheduling
 * Argument from poverty of the stimulus, a theory of language acquisition in linguistics
 * Advanced Photo System, a photographic film format
 * Annual Population Survey, a household survey in Great Britain
 * ApS, the Danish abbreviation for a limited liability company (Anpartsselskab)
 * Asset Protection Scheme, a UK government insurance scheme designed to help banks with bad loans
 * Australian Pink Floyd Show, a tribute band of Pink Floyd
 * Attending physician statement
 * Africa Partnership Station, a United States Navy maritime safety initiative.
 * Average propensity to save, the amount of her income on average a consumer will choose to save