TSG
- HP Enterprise Business
- Sabre Holdings
- Special Forces Group (Japan)
- TSG 1899 Hoffenheim
- TSG Consumer Partners
- TSG Entertainment
- TSG Group
- Tai Seng MRT station
- Technology Services Group
- Tennessee State Guard
- Territorial Support Group
- Texas State Guard
- The Sage Group
- The Simpsons Game
- The Smoking Gun
- TheSpeedGamers
- Traditional Speciality Guaranteed
- Traditional Sports and Games
- Transsexuals Act (Germany)
- Triggered spark gap
- Tumor suppressor gene