APT

APT is an initialism. It may refer to:

Computing and software

APT (programming language) (Automatically Programmed Tool), a high-level computer programming language
APT (software), Debian's high-level package management system, also used by other Linux-based operating systems
Almost Plain Text, or Doxia, a wiki-like syntax used mainly by Apache Maven
Annotation processing tool, a utility for executing annotation processors in the Java programming language
Advanced persistent threat, a set of stealthy and continuous computer hacking processes
Applied Predictive Technologies, a statistical business analysis software company
Advanced Programming Techniques Ltd., creators of the Command CICS software product

Alabama Public Television, a network of PBS member stations in Alabama, U.S.A.
American Players Theatre, a classical theater located in Spring Green, Wisconsin
American Public Television, a television program provider in the United States
APT Entertainment, a film production company in the Philippines

Automated Payment Transaction tax, a proposal to replace all taxes with a single tax on each and every transaction in the economy
Artist Pension Trust, an investment program designed for artists
Arbitrage pricing theory, a general theory of asset pricing

Ammonium paratungstate, a tungsten-based chemical compound
Atom-probe tomography, an atomic-resolution microscopy technique
Attached proton test, a technique used in carbon-13 nuclear magnetic resonance spectroscopy
Automatic picture transmission, a weather satellite system
Anterior pelvic tilt
Acyl-protein thioesterase, an enzyme family that cleaves cysteine thioesters

Advanced Passenger Train, a tilting passenger train designed and built during the late 1970s by British Rail
Association for Public Transportation, a Boston-based nonprofit organization
Australian Pacific Touring, an Australian tour operator

American Perimeter Trail, a proposed trail system in the continental United States
Animation photo transfer process (APT process), a process used in animation
Applied Probability Trust, a UK-based non-profit-making foundation for study and research in the mathematical sciences
APT assault rifle
ASEAN Plus Three, the Association of Southeast Asian Nations plus China, South Korea, and Japan
Asia-Pacific Telecommunity, an intergovernmental organisation concerning communications technology
The Asia Pacific Triennial, a major art exhibition at the Gallery of Modern Art, Brisbane, Australia
Asian Poker Tour, a major poker tour focusing on the Asia-Pacific region
Association for Preservation Technology International
Association for Psychological Therapies, a provider of accreditation and training for mental health professionals