| Acronym | Definition |
|---|
| MSBA | Minnesota State Bar Association |
| MSBA | Massachusetts School Building Authority (est. 2004) |
| MSBA | Maryland State Bar Association |
| MSBA | Master of Science in Business Analytics (various schools) |
| MSBA | Microsoft Baseline Security Analyzer |
| MSBA | Missouri School Boards' Association |
| MSBA | Minnesota School Boards Association |
| MSBA | Master of Science in Business Administration |
| MSBA | Massachusetts Striped Bass Association |
| MSBA | Microsoft Security Baseline Analyzer |
| MSBA | Metropolitan Suburban Bus Authority |
| MSBA | Maine School Boards Association |
| MSBA | Maryland State Builders Association |
| MSBA | Maine Sheep Breeders Association |
| MSBA | Maryland Sheep Breeders Association |
| MSBA | Michigan Sport Buggy Association |
| MSBA | Maryland Standardbred Breeders Association |
| MSBA | Michigan Sheep Breeders Association (Charlotte, Michigan) |
| MSBA | Michigan State Bar Association |
| MSBA | Mississauga Southwest Baseball Association |
| MSBA | Multi-Service Broadband Access |
| MSBA | Maine State Beekeepers Association (Readfield, ME) |
| MSBA | Military School Band Association |
| MSBA | Maysville South Business Association (Zanesville, OH) |
| MSBA | Montana State Brewers Association |
| MSBA | Maryland State Bowling Association |
| MSBA | Maryland State Beekeepers Association, Inc. |