| Abbreviation | Definition |
|---|---|
| SJL&P | St. Joseph Light & Power |
| SJM | Sha Jodaji Maniram |
| SJM | Stan Johansen Miniatures |
| SJN | Law Offices of Stephen J. Nolan |
| SJN | Simon Joas Netpage |
| SJP | Silver Jam Productions |
| SJR | San Joaquin Refining Company, Inc. |
| SJR | Sierra Judgment Recovery |
| SJT | Saint Jo Tribune |
| SJT | Silver Jewelry of Taxco |
| SJT | Stillman Jefferson Thomas digital photography |
| SJTC | Saint John Theatre Company |
| SJTC | Saint Joseph Theatre Company |
| SJV | Saint John Valley Communications |
| SJY | Stanley J. Yoder, Lawyer |
| SJYS | South Jersey Yacht Sales |
| SK | Steve and Kevin |
| SK | Storage King |
| SKAC | Schwartz Kales Accountancy Corporation |
| SKB | Shutters Corporation Berhad |