| Abbreviation | Definition |
|---|---|
| JRSC | Jamestown Rubber Stamp Company |
| JRTI | James River Technical Inc |
| JRTI | James River Technical, Inc. |
| JRW | Jim Walter Resources |
| JSC | John Sexton Corporation |
| JSDC | Jalandhar Skill Development Corporation |
| JSDC | Jamestown Stutsman Development Corporation |
| JSFG | Job Search Focus Group |
| JSI | Janitorial Services Inc |
| JSI | Job Squad Inc |
| JSI | John Snow Inc |
| JSI | John Staurulakis Inc |
| JSK | Jas Sum Kral |
| JSL | Javector Software, L. L. C. |
| JSL | Jindal Stainless Ltd |
| JSMA | Jersey Shore Medical Associates |
| JSMC | Jilin Sino- Microelectronics Company, Ltd. |
| JSP | Joseph S. Pederson, 1800s bottler |
| JSRC | Journal Square Restoration Corporation |
| JSSI | Jack Schwartz Shoes Inc |