| Acronym | Definition |
|---|
| MTG | Meeting |
| MTG | Magic: The Gathering |
| MTG | Mortgage |
| MTG | Mounting |
| MTG | Movimento Tradicionalista Gaucho (Portuguese: Gaucho Traditionalist Movement; Brazil) |
| MTG | Matheson Tri-Gas (various locations) |
| MTG | Mail Transfer Gateway |
| MTG | Mid Term Guidelines |
| MTG | Mind the Gap (London underground announcement) |
| MTG | Meta Tag Generator (software) |
| MTG | Methanol To Gasoline |
| MTG | Morpheus Trading Group (Florida) |
| MTG | Machine Tool Group (Belgium) |
| MTG | Manual Tank Gauging |
| MTG | Micro Turbine Generator |
| MTG | Master Timing Generator |
| MTG | Military Tactical Generator |
| MTG | Main Turbine Generator |
| MTG | Media Task Group |
| MTG | More Than Gymnastics (Fort Wayne, Indiana) |
| MTG | Metric Tonne Gross |
| MTG | Modern Times Group Ltd (Chile) |
| MTG | Maintenance Test Group |
| MTG | Many-To-One Traffic Grooming |
| MTG | Midthigh Girth |
| MTG | Manufacturing Technical Group |
| MTG | Manitoba Transit Gallery (Canada) |