| Abbreviation | Definition |
|---|---|
| JSCZ | Flexi-Van Leasing |
| JSCZ | Flexi-Van Leasing Incorporated |
| JSRC | Jackson and Southern Railroad |
| JSRC | Jackson and Southern Railroad Company |
| JSRW | Jersey Southern Railway |
| JSSU | China Navigation |
| JSSU | China Navigation Company Limited |
| JSSX | Jersey Shore Steel |
| JSSX | Jersey Shore Steel Company |
| JTAX | Trinity Rail Management |
| JTAX | Trinity Rail Management Incorporated |
| JTCO | Jacksonville Terminal |
| JTCO | Jacksonville Terminal Company |
| JTFX | Joseph Leasing |
| JTHX | Citicorp Railmark Incorporated |
| JTHX | Thomas D. Hicks, Citicorp Railmark |
| JTIX | Joseph Transportation |
| JTJX | Joseph Transportation |
| JTLX | Joseph Resources |
| JTMX | ISG Resources |