| Abbreviation | Definition |
|---|---|
| SST | Super Sport Trainer |
| SST | Super Sports Touring |
| SSTTL | Shake Shack Table Tennis League |
| SSV | Specialty Sports Venture |
| SSW | Stamford Sports Wheel |
| SSWF | Swedish Submission Wrestling Federation |
| SSX | Snowboard Supercross |
| SSX | Snowboarding Supercross Xtreme |
| ST | Short Track |
| ST | Snap Twist |
| ST | Sports Technologies |
| ST | Sports Technology |
| ST | Spring Training |
| ST | Starting Time |
| St | Stumped |
| STAC | Sectional Tournament At Club |
| STAC | Sectional Tournament At Clubs |
| STAC | Single Track Around Canberra |
| STAC | St. Thomas Adventure Club |
| STAG | Strike, Throw, And Go |