| Acronym | Meaning |
 | SUTAGS | Shuttle Uplink Text And Graphics Scanner |
 | SV | Safety Valve |
 | SV | Selenoid Valve |
 | SV | Shuttle Vehicle |
 | SV | Space Vehicle |
 | SV | State Vector |
 | SVA&C | Shuttle Vehicle Assembly And Checkout |
 | SVAB | Shuttle Vehicle Assembly Building |
 | SVAC | Shuttle Vehicle Assembly And Checkout (Facility) |
 | SVAFB | South Vandenberg Air Force Base |
 | SVB | Shuttle Vehicle Booster |
 | SVB | Space Vehicle Booster |
 | SVC | Supervisor Call |
 | SVDS | Space Vehicle Dynamic Simulator |
 | SVO | Space Vehicle Operations (KSC Dir.) |
 | SVRR | Software Verifir-ation Readiness Review |
 | SVS | Suit Ventilation System |
 | SW | Sea Water |
 | SW | Short Wave |
 | SW | Software (SFTWE Preferred) |
 | SW | Solar Wing |
 | SW | Status Word |
 | SW | Switcher (Switch) |
 | SW/PM | System Management/Performance Monitor |
 | SWA | Support Work Authorization |
 | SWAA | SPacelab Window Adapte |
 | SWAD | Subdivision Of Work Authorization Document |
 | SWAT | Stress Wave Analysis Technique |
 | SWG | Software Working Group |
 | SWOB | Salaries |
 | SWP | Safe Working Pressure |
 | SWR | Standing Wave Ratio |
 | SWS | Switch Scan |
 | SWT | Sextant |
 | SWT | Supersonic Wind Tunnel |
 | SXT | Sextant |
 | SY | Shoulder Yaw |
 | SY | System |
 | SYM | Symbol |
 | SYMM | Symmetrical |
 | SYN | Synchronous |
 | SYN | Synthetic |
 | SYNC | Synchronize |
 | SYNCOM | Hughes Spin Stabilized Spacecraft |
 | SYNCOM | Synchronous Communication Satellite (Hughes) |
 | SYS | System |
 | SYSTRAN | Systems Analysis Translator |
 | T | Transformation (Matrix) |
 | T | Superscript) |
 | T | Talk/Monitor |