| Abbreviation | Definition |
|---|---|
| SCRL-L | Speech Communication Research Laboratory Language |
| SCRP | Special Change Request Process |
| SCS | Shipboard Computing System |
| SCS | Source Control System |
| SCS | Special Communications System |
| SCSI | Small Computer System Interface |
| SCSRSS | Standard Command Supply Review System-SAILS |
| SCSW | System Communication Software |
| SCT | Shipping Coordination Team |
| SCT | Single Channel Transponder |
| SCTA | Special Cobra Trained Army |
| SCTF | South Central Task Force |
| SCTIS | Single Channel Transponder Injection System |
| SCTS | Single Channel Transponder System |
| SCT-UR | Single Channel Transponder Ultrahigh Frequency (UHF) Receiver |
| SCU | Satellite Communications Unit |
| SCUBA | Self Contained Underwater Breathing Apparatus |
| SCUD | Sport Car Ultimate Drive |
| SCUD | Surface-To-Surface Missile System |
| SCV | South Carolina Volunteers |