| Abbreviation | Definition |
|---|---|
| CSRR | Common Submarine Radio Room |
| CSRS | Combat Service Ration Study |
| CSS | Capability Support System |
| CSS | Central Security Service |
| CSS | Chinese Surface-to-Surface |
| CSS | Combat Server Support |
| CSS | Combat Service Support |
| CSS | Communications SubSystem |
| CSS | Comprehensive Smoke Study |
| CSS | Confederate States Ship |
| CSS | Coordinator Surface Search |
| CSS | Counter Strike Source |
| CSSA | Combat Service Support Area |
| CSSB | Combat Sustainment Support Battalion |
| CSSC | Civil Support Skills Course |
| CSSC | Coded Switch Set Controller |
| CSSC | Combat Service Support Center |
| CSSCS | Combat Service Support Control System |
| CSSCS-EAC | Combat Service Support Control System - Echelons Above Corps |
| CSSD | Computer Supported Simulations Division |