# LT

LT may refer to:

## Companies and organisations

* LTU International, a German airline (IATA code LT)
* Air Lituanica, a Lithuanian airline (IATA code LT)
* LJ Air, a Chinese airline (IATA code LT)
* Larsen & Toubro, an Indian engineering conglomerate, officially known as L&T
* Life Teen, a Roman Catholic organization for youth ministry
* London Transport (brand), the name for various transport authorities
* Lord & Taylor, a North American luxury department store chain
* Lorien Trust, a company that runs live roleplaying games
* Lucent Technologies (old company), which merged with Alcatel to form Alcatel-Lucent

## Places

* Lithuania (ISO 3166 code)
** Lithuanian language (ISO 639-1 code)
* Province of Latina, Italy (vehicle plate code)
* Long Trail, a footpath in the American state of Vermont

## Science, technology, and mathematics
### Biology and medicine

* Lactate threshold, a measurement used by athletes to determine the amount of strenuous work capable by their muscles
* Lymphotoxin, a cytokine
* Gallid alphaherpesvirus 1, the cause of infectious laryngotracheitis in poultry
* SV40 large T antigen, a proto-oncogene derived from polyomavirus SV40
* Heat-labile enterotoxin, a toxin produced by enterotoxigenic Escherichia coli

### Electronics and computing

* .lt, Internet country code top-level domain for Lithuania
* LaGrande Technology, former name for the Trusted Execution Technology (Intel's implementation of Trusted Computing)
* Left total, in sound recording, the left channel of the stereo Left total/Right total downmix
* Lightning Talk, a very short presentation lasting only a few minutes, given at a conference or similar forum.
* Linear Technology, manufacturer of integrated circuits
* Link Training, process by which the transmitter and receiver on a high-speed serial link communicate with each other in order to tune their equalization settings
* Logic Theorist, a computer program written in 1955–56 to prove mathematical theorems; called "the first artificial intelligence program"
* LanguageTool, an extension for many web browsers

### Mathematics

* Laplace transform
* Less than
* Logic Theorist, a computer program written in 1955–56 to prove mathematical theorems; called "the first artificial intelligence program"
* Lorentz transformation

### Vehicles

* LT, a type of London bus
* LT (car), an early Swedish automobile
* LT, a trim level for Chevrolet vehicles
* GM LT1 engine several engines by General Motors
* Lincoln Mark LT
* Volkswagen LT, a light truck
* McLaren 675LT, a British supercar
* Logistics Trainer, code name for the Lockheed F-117 Nighthawk stealth attack aircraft

### Other uses in science, technology, and mathematics

* Long ton, a unit of measurement

## Other uses

* Ladytron, a British electronic band
* Lawrence Taylor, retired American football outside linebacker
* LaDainian Tomlinson, retired American football running back
* Lead time, the latency between initiation and execution, as in supply chain management
* Left tackle, a position in American and Canadian football
* Lieutenant, sometimes abbreviated as Lt, Lt. Lieut, and similar
* Lisbon Treaty, a 2007 agreement amending the constitutional basis of the European Union
* Lithuanian language (ISO 639-1 code)
* Lithuanian litas (Lt), former currency of Lithuania, replaced by the Euro in 2015
* Living Things (Linkin Park album), 2012
* Local Time, in the context of time zones
* Looney Tunes, theatrical cartoon series
* Lorna Tolentino (born 1961), Filipina actress with her screen name L.T.
* Louis Tomlinson (born 1991), a British singer, songwriter