| Abbreviation | Definition |
|---|---|
| SCI | Secret Covert Investigation |
| SCI | Special Crash Investigations |
| SCIC | Smart City Initiative for Caribbean |
| SCIENCE | stupid cannibals inviting eco natural concluds nature |
| SCIF | Secure Compartmented Intelligence Facility |
| SCLP | Special Committee on License Portability |
| SCM | Summary Court Martial |
| SCO | Soft Copy Only |
| SCOPE | Systematic Controls Oversight And Policy Evaluation |
| SCOPE | Systematic Controls, Oversight, and Policy Evaluation |
| SCOTUS | Supreme Court Of The United States |
| SCOUT | Suspense Control, Oversight, Utilization, and Tracking system |
| SCP | Standards Completion Program (NIOSH/OSHA) |
| SCPO | SCPOSenior Chief Petty Officer - USN |
| SCR | Senate Concurrent Resolution |
| SCRC | Systems Changes for Real Choices |
| SCRP | Scientific Cooperation Research Program, USDA |
| SCRR | Special Conversion Recommendation Report (US FEMA) |
| SD | Sanction on Diamond |
| SD | Submittal Description |