| Acronym | Definition |
|---|
| MSIC | Mixed-Signal Integrated Circuit |
| MSIC | Maritime Security Identification Card (Australia) |
| MSIC | Missile and Space Intelligence Center (US DoD) |
| MSIC | Medium-Scale Integrated Circuit |
| MSIC | Military-Security-Industrial Complex |
| MSIC | Medical Support and Integration Contract (Johnson Space Center; US NASA) |
| MSIC | Massachusetts Credit Union Share Insurance Corporation |
| MSIC | Maritime Safety Information Center |
| MSIC | Medically Supervised Injecting Center |
| MSIC | Mapping System Interface Card (electronic device) |
| MSIC | MathScience Innovation Center |
| MSIC | Management Strategies International Center (Egypt) |