| Abbreviation | Definition |
|---|---|
| SCEX | Southern California Edison Company |
| SCFE | South Central Florida Express |
| SCFS | Straits Car Ferry Service Corporation |
| SCGX | Eades Commodities Company |
| SCGX | Schuler Grain (Eades Commodities) |
| SCHX | Rhone- Poulenc Basic Chemicals Company |
| SCHX | Stauffer Chemical |
| SCIH | ISG South Chicago and Indiana Harbor Railway |
| SCIU | Sea Containers |
| SCIU | Sea Containers, LTD |
| SCIU | Sea Containers, LTD. |
| SCIX | General Electric Rail Services Corporation |
| SCIX | General Electric Railcar Services Corporation |
| SCJX | Chevron Chemical Corporation |
| SCJX | Gulf Oil Products (Chevron Phillips Chemical) |
| SCKX | Northern Coal Transportation |
| SCKX | Northern Coal Transportation Company |
| SCL | CSX Transportation Incorporated |
| SCL | Seaboard Coast Line Railroad (CSX Transportation) |
| SCLU | Sea Containers |