| Acronym | Meaning |
| STR | Software Trouble Report |
| STR | Software Test Report |
| STR | Store |
| STR | Structures |
| STRAP | Sonobuoy Thinned Random Array Program |
| STRICOM | Simulation Training & Instrumentation Command |
| STRT | Start |
| STT | Schedule Training Time |
| STTWG | Submarine Training/trainer Working Group |
| STVTS | Submarine Tactical Visual Training System |
| SUBS | Subcontractors |
| SUM | Software Users Manual |
| SURTASS | Surveillance Towed Array Sensor |
| SV/C | Survivability, Vulnerability / Crashworthiness |
| SVIP | Secure Voice Improvement Program |
| SVT | System Validation Test |
| SW | Software |
| SW | Switch |
| SWAMP | Severe Wind And Moisture Problem |
| SWCL | Special Warfare Craft, Light |
| SWCM | Special Warfare Craft, Medium |
| SWDP | Software Development Plan |
| SWNRAC | Surface Warfare Naval Reserve Advisory Committee |
| SWOS | Surface Warfare Officer School |
| SWP | Space, Weight And Power |
| SWS | Strategic Weapons System |
| SWTG | Surface Warfare Trainer Group |
| SWTP | Software Test Plans Udi-t-21263b/mod |
| SWTRB | Surface Warfare Trainer Review Board |
| SWWBDS | Software Work Breakdown Structure (mil-std 881) |
| SYM | Symbology |
| SYS | System |
| SYSCOM | Systems Command |
| SYST | System |
| T | Top |
| T&E | Test And Evaluation |
| T/F | Terrain Following |
| T/R | Transmitter-receiver |
| T2 | Compressor Inlet Temperature |
| T3 | Compressor Discharge Air Temperature |
| TA | Terrain Avoidance |
| TA | Training Agent |
| TAAD | Task Assignment And Directive (ntsc-3930/26) |
| TAC | Table Assignment Chart |
| TAC | Total Accumulated Cyclestmttactical Air Control/command |
| TACAMO | Take Charge And Move Out |
| TACAN | Tactical Air Navigation |
| TACC | Tatical Air Control Center |
| TACCO | Tactical Coordinator |
| TACDEW | Tactical Advanced Combat Direction & Electronic Warfare |