| 1 | CWI | Chicago & Western Indiana R.R. Co. | 4/1938-1/1980; eliminated 1/1984; 1/1994 | | NAKINA |
| 2 | CWI | Chicago & Western Indiana R.R. Co. | 4/38-1/94 | | NRHS |
| 3 | CWI | RETIRED 01-05-94 ATP (0132) [CHICAGO & WESTERN INDIANA RR] | | | PWRC |
| 4 | CWI | Chicago and Western Indiana Railroad | | | RSRV |
| 5 | CWIC | CALDWELL INDUSTRIES CO LTD | | | SCAC4 |
| 6 | CWID | COUNTRY WIDE TRANSPORTATION SERVICE | | | SCAC3 |
| 7 | CWII | CHEM WEST INDUSTRIES INC | | | SCAC3 |
| 8 | CWII | CROSSWINDS INTERNATIONAL INC | | | SCAC4 |
| 9 | CWIJ | CWIC | | | SCAC4 |
| 10 | CWIM | CON-WAY TRUCKLOAD SERVICES, INC. | | | SCAC3 |
| 11 | CWIM | CON-WAY INTERMODAL INC | | | SCAC4 |
| 12 | CWIN | CONTAINERS WEST INC | | | SCAC3 |
| 13 | CWIQ | CITY WIDE TRUCKING CO | | | SCAC3 |
| 14 | CWIR | CONTAINER WAREHOUSE INC | | | SCAC3 |
| 15 | CWIR | CONTAINER WAREHOUSE INC | | | SCAC4 |
| 16 | CWIS | COASTWISE TRADE COMPANY, INC. | | | SCAC3 |
| 17 | CWIT | CENTRAL WISCONSIN TRUCKING INC | | | SCAC3 |
| 18 | CWIU | CON-WAY INTERMODAL | | | PWRC |
| 19 | CWIU | Con-Way Intermodal | | | RSRV |
| 20 | CWIU | CON-WAY INTERMODAL | | | SCAC3 |
| 21 | CWIX | Central Winery Inc. | 1/1941-1/1943 | | NAKINA |
| 22 | CWIX | CENTRAL WINERY, INC. | | | PWRC |
| 23 | CWIZ | CON-WAY INTERMODAL | | | PWRC |
| 24 | CWIZ | Con-Way Intermodal | | | RSRV |
| 25 | CWIZ | CON-WAY INTERMODAL | | | SCAC3 |
