CSSI
| Acronym | Definition |
|---|---|
| CSSI | Critical Skills Shortage Initiative |
| CSSI | California Strategic Sourcing Initiative |
| CSSI | Computer Support Services, Inc. (Irving, TX, USA) |
| CSSI | Computer Security Subsystem Interpretation |
| CSSI | Computer Software & Services Industry |
| CSSI | Containment Spray System, Post-Accident Injection Phase |
| CSSI | Client Specific Systems, Inc. |
| CSSI | Consolidated Supply & Services International Ltd (Kazakhstan) |
| CSSI | Contract Systems Software, Inc. |