| MSAC | Marion Staff Advisory Council 
| Others |
| MSAC | Maryland State Arts Council
| Others |
| MSAC | Maryland Student Affairs Conference
| Others |
| MSAC | Mass Senior Action Council
| Others |
| MSAC | Massachusetts Senior Action Council
| Others |
| MSAC | Massachusetts State Athletic Commission
| Others |
| MSAC | Maternity Services Advisory Committee
| Others |
| MSAC | Math Science Advisory Council
| Others |
| MSAC | Max Stats Activation Cost
| Others |
| MSAC | Medical and Scientific Advisory Council
| Others |
| MSAC | Medical Services Advisory Committee
| Others |
| MSAC | Medical Situational Awareness and Control
| Others |
| MSAC | Medical Student Affairs Council
| Others |
| MSAC | Melbourne Sports and Aquatic Centre
| Others |
| MSAC | Melbourne Sports Aquatic Centre
| Others |
| MSAC | Member of Stonebridge Associated Colleges Association
| Others |
| MSAC | Metro Student Attendance Center
| Others |
| MSAC | Microsoft Application Center
| Others |
| MSAC | Mid State Athletic Conference
| Others |
| MSAC | Missouri Sedimentation Action Coalition
| Others |
| MSAC | Montpelier Senior Activity Center
| Others |
| MSAC | Moravian Silesian Automotive Cluster
| Others |
| MSAC | Multicultural Student Advisory Committee
| Others |
| MSAC | Sonsonate-Acajutla, El Salvador
| Others |