| Abbreviation | Definition |
|---|---|
| ESCX | First Security Bank National Association |
| ESHR | Eastern Shore Railroad |
| ESHR | Eastern Shore Railroad Incorporated |
| ESLJ | East St. Louis Junction Railroad |
| ESLZ | East St. Louis Junction Railroad |
| ESMX | Essem Corporation |
| ESRX | Empire State Railcar |
| ESRX | Empire State Railcar Incorporated |
| ESSU | K Line |
| ESSX | Essex Industries (Colonial Chemical) |
| ETC | East Texas Central Railroad |
| ETCX | Eastman Chemical Company Incorporated |
| ETCX | Tennessee Eastman (Eastman Chemical) |
| ETD | End-of-Train Device |
| ETL | Essex Terminal Railway |
| ETL | Essex Terminal Railway Company |
| ETMX | Etarco Rail Services Corporation |
| ETR | Essex Terminal |
| ETR | Essex Terminal Railway |
| ETRC | East Tennessee Rail Car |