TSR
- BAC TSR-2
- FN Tactical Sport Rifle
- Fairey Swordfish
- Full Metal Panic!
- I Need a Haircut
- TSR Records
- TSR, Inc.
- Team Sonic Racing
- Telford Steam Railway
- Temporary speed restriction
- Terminate-and-stay-resident program
- Texas State Railroad
- The Shade Room
- Thermochemical sulfate reduction
- Timișoara Traian Vuia International Airport
- Tip-speed ratio
- Toronto Street Railway
- Toronto Suburban Railway
- Total shareholder return
- Traditional Spelling Revised
- Traffic-sign recognition
- Trans-Siberian Railway
- Transvaal Scottish Regiment
- Treno Servizio Regionale
- True Symphonic Rockestra
- Télévision Suisse Romande