| Carrier Code | Carrier Name |
| TNKP | TANKERSKA PLOVIDBA |
| TNKU | TRANSAMERICA LEASING INC |
| TNLU | TRANSALTIC LINE LTD |
| TNPS | TRANSPORTES PETROLEROS MEXICANOS S A DE C V |
| TNTS | TRINITY SHIPPING INC |
| TNVC | TRANSMARINE NAVIGATION CORPORATION |
| TNXU | TRANSX LTD |
| TNYT | TINY TANKER OF SEATTLE |
| TOCE | TOTAL OCEAN MARINE SERVICES INC |
| TOCU | TRANS OMEGA CONTAINER LINE |
| TOFU | TOFC INC |
| TOHO | TOHO SHIPPING COMPANY LTD |
| TOIL | TRANSITOIL INC |
| TOKU | TOKO KAIUN KAISHA LTD. |
| TOLL | TRANSKIM OVERSEAS LIMITED |
