| Abbreviation | Definition |
|---|---|
| CS3 | Combat Service Support System |
| CSA | Chief of Staff of the Army |
| CSA | Classified Staff Association |
| CSA | Combat Support Agency |
| CSA | Combat Support Associates |
| CSA | Common Support Aircraft |
| CSA | Confederate States Army |
| CSA | Container Stuffing Activity |
| CSA | Controlled Shooting Area |
| CSA | Corps Storage Area |
| CSAAS | Combat Support Agency Assessment System |
| CSAB | Combat Support Aviation Battalion |
| CSAC | Classified Staff Advisory Committee |
| CSAC | Command Studies Advisory Council/Committee |
| CSAD | Commander's Situational Awareness Display |
| CSADR | Combat Support Agency Director's Report |
| CSAF | Chief of Staff, United States Air Force |
| CSAH | Coalition to Salute Americas Heroes |
| CSAM | Computer Security for Acquisition Managers |
| CSAMS | Consultants, Studies & Analysis & Management Support Services |