| Abbreviation | Definition |
|---|---|
| SKP | Service Knowledge Proficiency |
| SKR | Storozhevoy Korabl' |
| SKS | Samozaryadni Karabin Simonva |
| SKS | Samozaryadnyi Karabin Sistemi |
| SKSA | Storekeeper Seaman Apprentice |
| SKSN | Storekeeper Seaman |
| SKT | Small Kill Team |
| SKV | Storekeeper ( Aviation) |
| SL | Sea Launch |
| SL | Security Level |
| SL | Sensitivity Level |
| SL | Silenced Liberators |
| SL | Slow Loader |
| SL | Sniper Lords |
| SL | Squadron Leader |
| SL | Staged Loading |
| SL | Steel and Lead |
| SL | Strategic Logistics |
| SL | Structure Load |
| SL | Switch Locator |