| Abbreviation | Definition |
|---|---|
| SOG | Skate Only Gang |
| SOG | Slip On Glove |
| SOGA | Southern Ohio Gamers Association |
| SoHG | Society of Hickory Golfers |
| SOI | Stars On Ice |
| SOL | Souls Of Legends |
| SOL | Students Of Lacrosse |
| SONB | Special Olympics New Brunswick |
| SONC | Special Olympics Northern California |
| SOOC | Seoul Olympic Organizing Committee |
| SOPAC | Sydney Olympic Park Aquatic Centre |
| SOQHA | Southern Ohio Quarter Horse Association |
| SORC | Southern Offshore Racing Committee |
| SOS | Same Old Sox |
| SOS | Spirit Of Sharing |
| SOS | Spirt Of the Sharks |
| SOS | Strength Of Schedule |
| SOS | Swim On Side |
| SOSA | Strikes Out Swinging Again |
| SOSC | Special Olympics Seminole County |