# 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

## In business
### 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

## Science, technology, and mathematics
### 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 fitness § PT, 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
* Processo transexualizador, a term for gender transition health care in Brazil