| Abbreviation | Definition |
|---|---|
| SJF | Surinaamse Judo Federatie |
| SJIT | San Jose International Triathlon |
| SJL | SarJatau Lukko ( Finnish Ice Hockey Federation) |
| SJM | Stan Johansen Miniatures Wargaming |
| SJMR | San Juan Mountain Runners |
| SJN | San Juan Rough Riders |
| SJO | South Jersey Open |
| SJP | Saint James Place ( Monopoly) |
| SJR | See Jane Race Tri Club |
| SJR | Spin Jig Rod |
| SJRC | South Jersey Rowing Club |
| SJTA | St. James Tennis Association |
| SJW | South Jersey Wheelmen Cycling Club |
| SK | Seven Knights |
| SK | Short Kick |
| SK | Soota Kraidoor (Royal Soccer club) |
| SKA | Scandinavian Killifish Association |
| SKA | Shotokan Karate of America |
| SKA | Southern Kingfish Association |
| SKA | Super Kick Ass |