| 1 | UTCB | UTE CAB CO | | | SCAC4 |
| 2 | UTCC | UTC | | | SCAC4 |
| 3 | UTCI | UNITED TRANSPORT INC | | | SCAC4 |
| 4 | UTCJ | UNIQUE TRANSPORT CORPORATION | | | SCAC4 |
| 5 | UTCK | UNITED TRUCKING | | | SCAC4 |
| 6 | UTCL | UNICO TRANS CORP | | | SCAC4 |
| 7 | UTCM | UNITED TRUCKING CORP | | | SCAC4 |
| 8 | UTCO | Union Traction Co. | 7/1923-1/1941 | | NAKINA |
| 9 | UTCO | Union Traction Co. | Apr-38 | | NRHS |
| 10 | UTCO | UNION TRACTION CO. | | | PWRC |
| 11 | UTCO | UNDERGROUND TECHNOLOGIES INC | | | SCAC4 |
| 12 | UTCP | UTC PROJECTS INC | | | SCAC4 |
| 13 | UTCQ | UNITED TRANSIT COMPANY | | | SCAC1 |
| 14 | UTCQ | UNITED TRANSIT CO | | | SCAC4 |
| 15 | UTCR | UNITED TRANS CO OF R I | | | PWRC |
| 16 | UTCR | UNIWORLD TRUCKING CO | | | SCAC4 |
| 17 | UTCU | STOLT TANK CONTAINERS LEASING LTD | | BM | BIC |
| 18 | UTCU | STOLT TANK CONTAINERS INC. | | | PWRC |
| 19 | UTCU | Stolt Tank Containers | | | RSRV |
| 20 | UTCU | STOLT TANK CONTAINERS INC | | | SCAC4 |
| 21 | UTCV | U T C OVERSEAS INC | | | SCAC4 |
| 22 | UTCX | Union Tank Car Co. | 7/1930-7/2005 | | NAKINA |
| 23 | UTCX | Union Tank Car Co. | 4/38-7/2000 | | NRHS |
| 24 | UTCX | UNION TANK CAR CO | | | PWRC |
| 25 | UTCX | Union Tank Car | | | RSRV |
| 26 | UTCX | Union Tank Car Co. | | USA | TRAFFIC |
