STA
- Component Object Model
- SCSI Trade Association
- STA Travel
- STA platoon
- STA sniper
- STA-21
- Saint Thomas Academy
- Samoa Tourism Authority
- Satna Junction railway station
- Scottish Tartans Authority
- Scottish Trans Alliance
- Shanghai Theatre Academy
- Shortcuts to adiabaticity
- Shuttle Training Aircraft
- Slovenska tiskovna agencija
- Space Shuttle Challenger
- Spacetime algebra
- Special temporary authority
- Spike-triggered average
- Spokane Transit Authority
- St. Albans School (Washington, D.C.)
- St. Theresita's Academy
- St. Thomas Aquinas Catholic Secondary School (London, Ontario)
- St. Thomas Aquinas High School (Louisville)
- State Transit Authority
- State Transport Authority (South Australia)
- State Transport Authority (Victoria)
- Static timing analysis
- Station (computer networking)
- Stauning Vestjylland Airport
- Student Transportation of America
- Surveillance and Target Acquisition
- Sustainable Transport Award