| Acronym | Definition |
|---|
| CMSI | Centralisateur de Mise en Sécurité Incendie (French fire safety system) |
| CMSI | Conduite et Maîtrise de la Sécurité Informatique (French: Computer Security Conduct and Control) |
| CMSI | Credit Management Solutions, Inc. (Columbia, MD) |
| CMSI | Contract Management Solutions, Inc. (software) |
| CMSI | Chicago Math and Science Initiative |
| CMSI | Computer Management Sciences, Inc. (Jacksonville, FL) |
| CMSI | Citicorp Mortgage Services, Inc. |
| CMSI | Checkout/Control and Monitor Subsystem Interface (NASA) |
| CMSI | Creusot Maintenance Service Industrie (French metal construction company) |