| Abbreviation | Definition |
|---|---|
| STK | Stakes Race |
| STKF | Swiss Traditional Karate Do And Kobudo Federation |
| STKW | Surfin' To Key West |
| STL | St. Louis Cardinals |
| STLB | St. Louis Blues |
| STLC | St. Louis Cardinals |
| STLL | Southern Tioga Little League |
| STLUSC | St. Lawrence United Soccer Club |
| STM | Street Tuned Motorsports |
| STMI | Sports Trade Marketing International |
| STO | Special Tournament Options |
| STO | Standing Take Over |
| STOP | Sports Trauma and Overuse Prevention |
| STORM | Scorched Treads Obsessive Race Mod |
| STP | Scenario Tables Pool |
| STP | Smothers, Tackles, Punches |
| STP | Soft Tail Pro bicycle |
| STPC | Short Track Pro Cup |
| STR | Season Ticket Renewal |
| STRIVE | Sports Teach Respect Initiative Values And Excellence |