MT or mt may stand for:

Automotive

• Honda MT, a motorcycle
• Hyundai Mega Truck, a medium-duty truck
• Manual transmission, part of a car
• Motor Trend, an automotive magazine

Computing and the Internet

• .mt, the top-level Internet domain for Malta
• Monotype Corporation, a font company
• Machine translation, a subfield of computational linguistics
• Mauritius Telecom, a a telecommunications and Internet service provider
• Megatransfer
• Mersenne twister, a pseudorandom number generator
• Movable Type, a weblog publishing system
• Multi-threading, a concept in computer programming
• Main-Tank, the person who soaks up all the damage in an MMORPG.
• Empty, in text speek.

Geography and languages

• Malta, a nation of Mediterranean islands
• Montana, one of the United States of America
• Mato Grosso, a state in Brazil
• Mountain, a landform
• Maltese language, called “mt” in ISO 639 alpha-2 language code
• Mountain Time Zone, a time zone in North America

Media and entertainment

• M. T. Vasudevan Nair, a Malayalam writer
• Magical Trevor, a cartoon by Jonti Picking
• Megatokyo, a webcomic
• Modern Talking, a band
• Moon Tycoon, a simulation computer game
• Muscle Tracer, an enemy in the Armored Core video game series
• Wangan Midnight Maximum Tune, an arcade racing game

Religion

• Gospel of Matthew, part of the New Testament
• Masoretic Text, the Hebrew text of the Jewish Bible (Tanakh)

Science

Biology

• Microtubule, a component of the cytoskeleton
• Mitochondrion, an organelle found in most eukaryotic cells
• The medial temporal, part of the temporal lobe of the brain

Health and medical

• Massage therapy, adding directed pressure to the body
• Massage Therapist, the title of someone who performs massage therapy
• Medical Technologist, a healthcare professional who performs diagnostic tests
• Medical transcription, the field of transcribing medical information
• Migraine Trust, a British medical research charity
• Motivational therapy, a treatment for substance abuse

Measurements

• Megaton, a unit of explosive power
• Metric ton, a measurement of mass equal to one thousand kilograms

Other

• Magnetotellurics, a method of imaging underground structures
• Materials Today, a scientific journal
• Meitnerium, a chemical element

Transport

• Mississauga Transit, a public transit operator in Mississauga, Ontario
• Thomas Cook Airlines, “MT” in IATA airline designator code

Other meanings

• Machine taper, a system for securing accessories to a machine tool
• Modus tollens, a concept in logic