LT, lt, and variants may refer to:
In telecommunication, Long-Term Evolution (LTE) is a standard for wireless broadband communication for mobile devices and data terminals, based on the GSM/EDGE and UMTS/HSPA technologies.
The LTV A-7 Corsair II is an American carrier-capable subsonic light attack aircraft manufactured by Ling-Temco-Vought (LTV) to replace the Douglas A-4 Skyhawk.
LTspice is freeware computer software implementing a SPICE electronic circuit simulator, produced by semiconductor manufacturer Linear Technology, now part of Analog Devices.
LTE Advanced is a mobile communication standard and a major enhancement of the Long Term Evolution (LTE) standard.
The Portuguese Air Force (PoAF) operated 50 LTV A-7 Corsair II aircraft in the anti-ship, air interdiction and air defense roles between 1981 and 1999. The Portuguese government acquired the Corsair II to replace the PoAF's North American F-86 Sabre fighters, with two orders being placed for a total of 50 A-7P and TA-7P.
LTE in unlicensed spectrum (LTE-Unlicensed, LTE-U) is a proposed extension of the Long-Term Evolution (LTE) wireless standard intended to allow cellular network operators to offload some of their data traffic by accessing the unlicensed 5 GHz frequency band.
LTU, legally incorporated as LTU Lufttransport-Unternehmen GmbH, was a German leisure airline headquartered in Düsseldorf.