APT

APT is an acronym. It may refer to:

Computing and software

APT (programming language) (Automatically Programmed Tool), a high-level computer programming language
Advanced Packaging Tool, 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
APT (former UK mainframe software vendor) (Advanced Programming Techniques Ltd.) Products including: OLIVER, SIMON and Command CICS.

Alabama Public Television, a network of PBS affiliates 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

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

Advanced Passenger Train an ambitious passenger train designed and built during the late 1970s by British Rail. Both the APT-E and APT-P were the prototype units.
Association for Public Transportation, a Boston-based nonprofit organization
Australian Pacific Touring, an Australian tour operator

Asia-Pacific Telecommunity
APT band plan in the 700 MHz band
Applied Probability Trust, a UK-based non-profit-making foundation for study and research in the mathematical sciences
Art in Perpetuity Trust, a London-based charity
ASEAN Plus Three, an international organisation
Apartment, a self-contained housing unit that occupies only part of a building
APT (film), a 2006 South Korean horror film
Asian Poker Tour, a major poker tour focusing on the Asia-Pacific region
APT process (Animation Photo Transfer), a process used in animation
Ammonium paratungstate
Association for the Prevention of Torture, a Geneva-based NGO