MTM may refer to:

Computing Microsoft Test Manager, a diagnostic software tool

Science, technology, medicine and engineering Massive Thirring Model, in quantum field theory Medication Therapy Management, pharmaceutical care by pharmacists Mercury Transfer Module, the power and propulsion segment of the BepiColombo spacecraft Methods-time measurement, a motion time system Methyltrimethoxysilane, an organosilicon compound Midwoofer-tweeter-midwoofer, a loudspeaker configuration Model–test–model, in military combat modelling Modified Transverse Mercator coordinate system, used in Eastern Canada Motoren Technik Mayer, Wettstetten, Germany, a car tuner Mountaintop removal mining Methylthiomethyl ether, chemical compound X-linked myotubular myopathy, a form of centronuclear myopathy

Entertainment MTM Enterprises, Mary Tyler Moore's production company MTM Records, a MTM Enterprises record label MTM (band), a Portuguese band

Transport Martin Mill railway station, Dover, Kent, England; National Rail station code Metlakatla Seaplane Base, Metlakatla, Alaska; IATA airport code and FAA location identifier Metro Trains Melbourne, operator of the commuter train network in Melbourne, Victoria Metland Telagamurni railway station, a railway station in Bekasi Regency, Indonesia

Other Ibanez MTM, a guitar brand Made-to-measure clothing MaineToday Media, media company Mark-to-market accounting in economics Max the Mutt College of Animation, Art & Design, Toronto, Ontario Media Technology Monitor, a Canadian survey Minnesota Transportation Museum, Saint Paul, Minnesota Momentum, a financial indicator Monster Truck Madness, a racing video game A variant of the MT explosive motorboat, an Italian Royal Navy World War II motorboat designed to ram moored ships The Swedish Agency for Accessible Media (Swedish: )

See also M2M (disambiguation)