| Acronym | Definition |
|---|
| MTWG➣Municipal Technical Working Group (Philippines) |
| MTWG➣Massilia Travel Web Guide (Frioul, Marseille Provence, France) |
| MTWG➣Maritime Transport Working Group (Association of Southeast Asian Nations) |
| MTWG➣Montana Wing (Civil Air Patrol) |
| MTWG➣Metadata Technical Working Group (UK) |
| MTWG➣Molecular Typing Working Group |