| Acronym | Meaning |
| SSD | Emergency Escape/survival Device |
| SSD | Software Support Date |
| SSDD | System/segment Design Document |
| SSDG | Ship Service Diesel Generator Set (ffg-7) |
| SSDS | Single Ship Deep Sweep |
| SSEP | Sub Surveillance Equipment Program |
| SSER | System Safety Engineering Report |
| SSES | Ship's Signal Exploitation Space |
| SSFC | Solid State Frequency Changer |
| SSG | Attack Guided Missile Submarine (conventional Powered |
| SSHA | Subsystem Hazard Analysis |
| SSI | Structural Significant Item |
| SSMP | Supply Support Management Plan |
| SSN | Attack Submarine (nuclear Powered) |
| SSP | Software Support Package Udi-s-21276a/mod |
| SSP | Stars Standards Portfilio |
| SSPM | Software Standards And Procedures Manual |
| SSPP | System Safety Program Plan |
| SSR | Software Specification Review |
| SSS | System/segment Specification |
| SSSA | Systems Software Support Activity |
| SSTD | Surface Ship Torpedo Decoy |
| SSU | Saybolt Seconds Universal |
| SSW | Surface Ship Warfare |
| SSWG | System Safety Working Group |
| SSXBT | (an/bqh-7) |
| ST | Self Test |
| ST | Software Test |
| STA | Static Test Article |
| STA | Station |
| STAB | Stabilizer |
| STACS | A-6e |
| STARS | Software Technology For Adaptable, Reliable Systems |
| STAT | Station |
| STAT | Status |
| STBY | Standby |
| STD | Software Test Description |
| STD | Standard |
| STDL | Submarine Tactical Data Link Program |
| STDY | Steady |
| STE | Special Test Equipment |
| STEP | Spec To Executable Program; |
| STEP | Standard For Exchange Of Product Model Data |
| STEP | Surface Warfare Training Evaluation Program |
| STHD | Stored Heading |
| STIM | Stimulate |
| STIM | Stimulation |
| STIR | Separate Track And Illuminating Radar |
| STO | Short Takeoff |
| STP | Software Test Plan |