MBSG
| Acronym | Definition |
|---|---|
| MBSG | Missouri Basin Systems Group (est. 1963; electric utilities; Sioux Falls, SD) |
| MBSG | Millennium Business Solutions Group (Westlake Village, CA) |
| MBSG | Maine Benzodiazepine Study Group (est. 2002; Noortheast Occupational Exchange; Bangor, ME) |
| MBSG | Marshall Business Student Government (University of Southern California) |
| MBSG | Mobiasbanca Groupe Société Générale |
| MBSG | Middle Bronze Study Group (Israel) |