| Abbreviation | Definition |
|---|---|
| CSNP(SE) | Causeway Section, Non-Powered (Sea End) |
| CSO | Center for Special Operations |
| CSO | Chief Safety Officer |
| CSO | Closely-Spaced Objects |
| CSO | Combat Systems Officers |
| CSO | Communications Service Order |
| CSO | Communications Support Organization |
| CSO | Computer Security Officer |
| CSOA | Combined Special Operations Area |
| CSOB | Command Systems Operations Branch |
| CSOC | Consolidated Space Operations Center |
| CSOC | Cyber Security Operations Center |
| CSOD | Command Systems Operation Division |
| CSOS | Composite Signals Organisation Station |
| CSOT | Constant Source Operator Terminal |
| CSP | Call Service Position |
| CSP | Career Sea Pay |
| CSP | Causeway Section, Powered |
| CSP | Certified Safety Professional |
| CSP | Code and Signal Publication |