| Abbreviation | Definition |
|---|---|
| SUMER | Solar Ultraviolet Measurements of Emitted Radiation |
| SUMM | Summary |
| SUMS | Shuttle Upper-Atmosphere Mass Spectrometer |
| SUP | Supply |
| SUP | Support |
| SUPARCO | Space and UPper Atmosphere Research COmmission |
| SUPCRIT | SUPerCRITical |
| SUPCRITS | upercritical |
| SUPPR | Suppression |
| SUPSALV | Supervisor of Salvage (U.S. Navy) |
| SUPT | Support |
| SURE | Shuttle Users Review and Evaluation |
| SURF | Surface |
| SURS | Standard Umbilical Retraction System |
| SUSIM | Solar Ultraviolet Spectral Irradiance Monitor |
| SUTAGS | Shuttle Uplink Text and Graphics Scanner |
| SV | Safety Valve |
| SV | Saturn V Rocket |
| SV | Shuttle Vehicle |
| SV | Solemoid Valve |