TMAG
| Acronym | Definition |
|---|---|
| TMAG | Tasmanian Museum and Art Gallery (Australia) |
| TMAG | The Morning After Girls (band) |
| TMAG | Testability Management Action Group |
| TMAG | Trilateral Monitoring and Assessment Group (est. 1997) |
| TMAG | Transfusion Medicine Advisory Group (Canada) |
| TMAG | Technical Modeling and Analysis Group (Trinity River Restoration Program; Weaverville, CA) |