| Abbreviation | Definition |
|---|---|
| TSRGD | Traffic Signs Regulations and General Directions |
| TSRS | Training Session Registration System |
| TSS | Technology Shock Syndrome |
| TSS | Technology Support Services |
| TSS | Trip Support Services |
| TSV | Today's Special Value |
| TT | Typewriter Type |
| TTA | Telegraphic Transfer Advance |
| TTB | Thompson Total Branding |
| TTC | Technical Tree Climbing |
| TTC | Time To Customer |
| TTE | Track Trace of Explosives |
| TTE | Track & Trace of Explosives |
| TTF | Terminal Transaction Facility |
| TTG | very very large (French: très,très grand) |
| TTL | Total Tech Level |
| TTM | Time To Market |
| TTO | Technology Transfer Office |
| TTO | Time Trade-Off |
| TTQ | Time To Quit |