PT

PT, Pt, or pt may refer to:

Arts and entertainment

 * P.T. (video game), acronym for Playable Teaser, a short video game released to promote the cancelled video game Silent Hills
 * Porcupine Tree, a British progressive rock group

Businesses

 * Capital Cargo International Airlines (IATA airline designator PT)
 * West Air Sweden (IATA airline designator PT)
 * Putnam Transit, a bus system that serves Putnam County, New York
 * Portugal Telecom, the largest telecommunications service provider in Portugal
 * Piteå-Tidningen, a Swedish local newspaper

Business terminology

 * Part-time job
 * Perseroan Terbatas, the Indonesian name for a limited liability company

Political parties

 * Partido dos Trabalhadores (Brazil) (Workers' Party), a Brazilian political party
 * Parti des travailleurs (France) (Workers' Party), a defunct French political party
 * Partido dos Trabalhadores (Guinea-Bissau) (Workers' Party), a Bissau-Guinean political party
 * Partido del Trabajo (Mexico) (Labor Party), a Mexican political party

Places

 * Promontory or point, a prominent mass of land that overlooks lower-lying land or a body of water

Specific places

 * Portugal (ISO country code PT)
 * .pt, an Internet top-level domain name for Portugal
 * Portuguese language (ISO 639 alpha-2 code "pt")
 * Palestinian territories, comprise the West Bank (including East Jerusalem) and the Gaza Strip
 * Pistoia, a city in Italy
 * Port Townsend, Washington, a city in Jefferson County, Washington, in the United States
 * Pacific Time Zone, a time zone 8 hours behind UTC

Biology and medicine

 * pt, patient, a medical abbreviation
 * Physical therapy/Physiotherapy or Physical therapist/Physiotherapist
 * Pararosaniline, Toluidine histological stain
 * Percutaneous surgery
 * Pertussis toxin, a protein-based exotoxin which causes whooping cough
 * Petunidin, an anthocyanidin plant pigment
 * Prothrombin time, a measurement of blood coagulation
 * Pump thrombosis, a major device malfunction due to a suspected or confirmed development of a pump thrombus

Computing

 * .pt, an Internet top-level domain name for Portugal
 * Plain text, data consisting in unformatted characters
 * Panorama Tools, a suite of programs and libraries originally by Helmut Dersch
 * Pluggable Transport, an API in the Tor Project
 * Penetration testing, checking to see how secure a computer system is

Physics and chemistry

 * Platinum, symbol Pt, a chemical element
 * Polythiophene, a molecule
 * Total pressure (P$t$), in fluid dynamics

Transportation

 * A US Navy hull classification symbol: Patrol torpedo boat (PT)
 * Public transport, or public transit
 * Chrysler PT Cruiser, a car model
 * PT-91, a military tank

Units of measurement

 * Percentage point (pt), a unit for the arithmetic difference of two percentages
 * pt, a measurement in the print industry for thickness of card stock
 * Pint (Pt.), a unit of volume or capacity
 * Point (typography) (Pt.), a unit of measure used in typography

Other uses in science, technology, and mathematics

 * Permian-Triassic extinction event, a mass extinction between the Paleozoic and Mesozoic eras
 * Peat, in the Unified Soil Classification System
 * Post-tensioned concrete, a reinforcement method in structural engineering
 * Potential transformer, an electrical component for changing voltage
 * Pressure treated wood

Sport

 * Personal trainer, in fitness and bodybuilding
 * Pro Tour (disambiguation)

Physical fitness

 * Physical education, known in many Commonwealth countries as physical training or PT
 * Physical training instructor, in the British & Commonwealth military; also in the British police
 * , physical training

Other uses

 * Pandit, a Hindu honorific applied to certain scholars of law, religion, philosophy or music
 * Perpetual traveler or "permanent tourist"
 * Perspectives on Terrorism, an academic journal
 * Pro tempore, a Latin phrase "for the time being" (temporary)
 * Pyramid Texts, an ancient Egyptian funerary text