| Abbreviation | Definition |
|---|---|
| SET | Safe Effective Transports |
| SETH | Suddenly Every Teams Hitting |
| SEV | Sport En Vriendschap |
| SEW | Schunk Extreme Wrestling |
| SEZ | South End Zone |
| SF | Sacrifice Fly |
| SF | San Francisco Giants |
| SF | Scuderia Ferrari |
| SF | Sets For |
| SF | Sword and Fist |
| SFA | Scottish Football Association |
| SFAA | Sports Financial Advisors Association |
| SFAB | Sport Fishing Advisory Board |
| SFBAB | San Francisco Bay Area Bombers |
| SFC | Submission Fighting Championship |
| SFF | Skate For Fun |
| SFFA | Scottish Flag Football Association |
| SFG | San Francisco Giants |
| SFK | Something For Kate |
| SFMMA | Schulenburg Family Mixed Martial Arts |