| Acronym | Definition |
|---|
| MSAC | Morgan Stanley ABS Capital I, Inc. (New York, NY) |
| MSAC | Microsoft Application Center |
| MSAC | Macdonald Stewart Art Centre (Canada) |
| MSAC | Mountain State Athletic Conference (West Virginia) |
| MSAC | Melbourne Sports Aquatic Centre (Australia) |
| MSAC | Mount San Antonio College (California) |
| MSAC | Medical School Admissions Committee (various schools) |
| MSAC | Medical and Scientific Advisory Council |
| MSAC | Midland Seventh-Day Adventist Church (Midland, TX) |
| MSAC | Mission Special Agent in Charge (US Army) |
| MSAC | Medical Services Advisory Council (Australia) |
| MSAC | Marine Safety Advisory Council (Canada) |
| MSAC | Meridian Services Attendant Console (Nortel) |
| MSAC | Mine Safety Appliances Company (Pittsburgh, Pennsylvania) |
| MSAC | Mobile Supervision and Control |
| MSAC | Member of Stonebridge Associated Colleges |
| MSAC | Morris-Sussex Area Council (New Jersey Boy Scouts) |
| MSAC | Minimum Security Activity Checklist (US DoD IT security) |
| MSAC | Masters of Science in Addiction Counseling (various schools) |