TMG

TMG could refer to:

In science and technology:
* Tensiomyography, a novel method for skeletal muscles' contractile parameters detection
* Trimethylglycine, in biochemistry
* Trimethylgallium, used in semiconductor fabrication
* Touring Motor Glider, in aviation
* Thermal Micrometeoroid Garment, the outer layer of a space suit
* Thermomechanical generator, a Stirling engine invented by Cooke-Yarborough
* TMG (programming language), an early compiler definition language, and the name of the utility which parsed it

In music:
* KTMG, a commercial radio station in Prescott, Arizona, United States
* WTMG, a commercial radio station in Williston, Florida, United States
* Ted Mulry Gang, an Australian rock group
* The Militia Group, a record label
* The Mountain Goats, a folk rock band
* Tak Matsumoto Group, a Japanese supergroup

In other media:
* Trader Media Group, a publishing company based in the United Kingdom
* Telegraaf Media Groep, a Dutch media and publishing company
* The McLaughlin Group, a weekly public affairs show created by John McLaughlin
* Terror of Mechagodzilla, a 1975 science fiction film directed by Ishiro Honda

Other uses:
* Tokyo Metropolitan Government, the city government of Tokyo
* "TMG", the NYSE symbol for oil pipeline and terminal company TransMontaigne
* Tunisia Monitoring Group, a coalition of 16 free expression organisations
* The Master Genealogist, genealogy software