QT or Qt may refer to:

Businesses

* The Qt Company, a Finnish software developer * QT Hotels & Resorts, an Australasian hospitality provider * QT Inc., an American bracelet manufacturer * QuikTrip, an American convenience store chain

People

* QT (musician) (born 1988), American pop singer * QTCinderella (born 1994), American Twitch streamer and YouTuber * Q-Tee, British rapper (active in the 1990s) *

Quentin Tarantino Quentin Jerome Tarantino (; born March 27, 1963) is an American filmmaker, actor, and author. Quentin Tarantino filmography, His films are characterized by graphic violence, extended dialogue often featuring much profanity, and references to ...

(born 1963), American filmmaker

Science and technology

Computer software

Qt (software) Qt ( pronounced "cute") is a cross-platform application development framework for creating graphical user interfaces as well as Cross-platform software, cross-platform applications that run on various software and hardware platforms such as L ...

, a cross-platform application framework *

QuickTime QuickTime (or QuickTime Player) is an extensible multimedia architecture created by Apple, which supports playing, streaming, encoding, and transcoding a variety of digital media formats. The term ''QuickTime'' also refers to the QuickTime Pla ...

, a multimedia technology from Apple Inc.

Heart medicine

QT interval The QT interval is a measurement made on an Electrocardiography, electrocardiogram used to assess some of the electrical properties of the heart. It is calculated as the time from the start of the QRS complex, Q wave to the end of the T wave, an ...

, on an electrocardiogram **

Long QT syndrome Long QT syndrome (LQTS) is a condition affecting repolarization (relaxing) of the heart after a heartbeat, giving rise to an abnormally lengthy QT interval. It results in an increased risk of an irregular heartbeat which can result in fainti ...

, a rare condition **

Short QT syndrome Short QT syndrome (SQT) is a very rare genetics, genetic disease of the electrical system of the heart, and is associated with an increased risk of Heart arrhythmia, abnormal heart rhythms and sudden cardiac death. The syndrome gets its name from ...

, a very rare disease

Units of measure

Quart The quart (symbol: qt) is a unit of volume equal to a quarter of a gallon. Three kinds of quarts are currently used: the liquid quart and dry quart of the US customary system and the of the British imperial system. All are roughly equal ...

(qt), an imperial unit of volume

Television shows

* '' QT: QueerTelevision'', a 1990s Canadian LGBT newsmagazine * ''Question Time'' (TV programme), a British panel debate (first aired 1979)

Transport

* QT (New York City Subway service), a defunct rapid-transit service * Quiet Trader, cargo versions of the

BAe 146 The British Aerospace 146 (also BAe 146) is a short-haul and regional airliner that was manufactured in the United Kingdom by British Aerospace, later part of BAE Systems. Production ran from 1983 until 2001. Avro International Aerospace manu ...

airliner

Other uses

* Quality time, periods proactively spent with one's loved ones * Quantitative tightening, a contractionary monetary policy from a central bank