| Abbreviation | Definition |
|---|---|
| SITES | Standard Information Topic Exchange Service |
| SITS | Strategic Information Technology Services |
| SIU | Seiko Instruments USA, Inc. |
| SIW | SImulation Works, Inc. |
| SJA | St. John Ambulance, London, Ontario, Canada |
| SJB | Photography by Steven J. Bushell |
| SJB | St. John Bosco Child Care and Development Center |
| SJD | Spangler, Jennings, & Dougherty, P. C. |
| SJE | S. J. Electro Systems, Inc. |
| SJE | South Jersey Energy |
| SJF | Sustainable Jobs Fund, L. P. |
| SJG | South Jersey Gas |
| SJG | Steve Jackson Games |
| SJH | San Jose Harley- Davidson |
| SJH | Stelmar Shipping, Ltd. |
| SJJ | Super Jock 'n Jill |
| SJK | Stephen J. Kaufman Public Relations |
| SJK | Stephen J. Kennedy, Attorney |
| SJK | Suzuki Jidosha Kogyo |
| SJL | Steven J. Loving Network Consulting |