MSRB
| Acronym | Definition |
|---|---|
| MSRB | Municipal Securities Rulemaking Board |
| MSRB | Medical Sciences Research Building (various universities) |
| MSRB | Municipal Securities Review Board (regulatory group) |
| MSRB | Member State's Regulatory Body (EU) |
| MSRB | Managerial Selection Review Board |
| MSRB | Middle Savannah River Basin (Georgia-South Carolina border) |