MTWG
| 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 |