MBAS
| Acronym | Definition |
|---|---|
| MBAS | Methylene-Blue active Substances |
| MBAS | Melbourne Blues Appreciation Society (club; Melbourne, Victoria, Australia) |
| MBAS | Malted Barley Appreciation Society (Brooklyn, NY) |
| MBAS | Mercury Bay Area School (New Zealand) |
| MBAS | Molecular and Biological Agricultural Sciences (Taiwan International Graduate Program; Taiwan) |
| MBAS | Madison Biblical Archaeology Society (est. 1967; Madison, WI) |
| MBAS | Moriches Bay Audubon Society (New York) |