| 1 | T-10 | FEDERAL RAILROAD OWNED VEHICLE | PWRC | ||
| 2 | T&G | Tremont & Gulf Ry. (Co.) | 8/1920-4/1970 | NAKINA | |
| 3 | T&G | Tremont & Gulf Ry. | 4/38-4/70 | NRHS | |
| 4 | T&G | TREMONT & GULF RAILWAY CO. | PWRC | ||
| 5 | T&NO | Texas & New Orleans R.R. (Southern Pacific Lines in Texas and Louisiana) | 8/1920-7/1936 | NAKINA | |
| 6 | T&NO | Texas & New Orleans R.R. | 4/1938-4/1961 | NAKINA | |
| 7 | T&NO | Southern Pacific Co. (Texas and Louisiana Lines) | 7/1965 | NAKINA | |
| 8 | T&NO | Texas and New Orleans R.R. Co. (Southern Pacific Co.) | 10/1966 | NAKINA | |
| 9 | T&NO | Texas & New Orleans R.R. | 4/38-4/61 | NRHS | |
| 10 | T&NO | Southern Pacific Co. (Texas and Louisiana Lines) | Jul-65 | NRHS | |
| 11 | T&NO | Texas and New Orleans R.R. Co. (Southern Pacific Co.) | Oct-66 | NRHS | |
| 12 | T&NO | UNION PACIFIC RAILROAD [SOUTHERN PACIFIC TRANSP. CO.; TEXAS & NEW ORLEANS RR] | PWRC | ||
| 13 | T&P | Texas & Pacific Ry. | 8/1920-4/1970 | NAKINA | |
| 14 | T&P | Texas & Pacific Ry. | 4/38-4/70 | NRHS | |
| 15 | T&P | TEXAS & PACIFIC RY | PWRC | ||
| 16 | T&W | The Toledo and Western Ry. Co. | 8/1920-7/1932 | NAKINA | |
| 17 | T&W | TOLEDO & WESTERN RWY. CO. | PWRC | ||
| 18 | T30 | Train Side View 30px | TRAFFIC | ||
| 19 | TA&G | Tennessee, Alabama & Georgia Ry. (Co.) | 7/1923-4/1970 | NAKINA | |
| 20 | TA&G | Tennessee, Alabama & Georgia Ry. Co. | 4/38-4/70 | NRHS | |
| 21 | TA&G | TENNESSEE, ALABAMA & GEORGIA RWY. CO. | PWRC | ||
| 22 | TA&W | Toledo, Angola & Western Ry. Co. | 4/1938-4/1970 | NAKINA | |
| 23 | TA&W | Toledo, Angola & Western Ry. Co. | 4/38-4/70 | NRHS | |
| 24 | TA&W | TOLEDO, ANGOLA & WESTERN RWY. CO. | PWRC | ||
| 25 | TAA | Aeroservicios de La Costa | ICAO1 | ||
| 26 | TAA | Trans Australia Arlines | Name is changed to Quantas in 1967 | AUS | TRAFFIC |
| 27 | TAAA | TRIPLE A DISTRIBUTION INC | SCAC3 | ||
| 28 | TAAA | TRANSPORTES ALTA SA DE CV | SCAC4 | ||
| 29 | TAAB | TRANSPORTATION ASSOCIATES | SCAC3 | ||
| 30 | TAAB | TRANSATLANTIC SHIPPING AB | SCAC4 | ||
| 31 | TAAC | TITAN ARMORED CAR & COURIER INC | SCAC3 | ||
| 32 | TAAC | TRANSPORTES A T C M | SCAC4 | ||
| 33 | TAAD | TALBOT, A J & D M TRUCKING | SCAC3 | ||
| 34 | TAAD | TALBOT, A J & D M TRUCKING | SCAC4 | ||
| 35 | TAAE | TAALMAN ENGINEERED PRODUCTS | SCAC4 | ||
| 36 | TAAF | T-A-T MAR CORP | SCAC3 | ||
| 37 | TAAF | TRANSPORTES ANTONIO AMEZCUA FLORES | SCAC4 | ||
| 38 | TAAH | THOMPSON, AL TRUCKING INC | SCAC4 | ||
| 39 | TAAI | TIAN LAI TRANSPORTATION LTD | SCAC4 | ||
| 40 | TAAK | TRANSPORT AMERICA INC | SCAC3 | ||
| 41 | TAAL | TRANSALL INC | SCAC3 | ||
| 42 | TAAL | TRANSPORT ALAIN NADEAU INC | SCAC4 | ||
| 43 | TAAM | TARA MOTOR FREIGHT | SCAC3 | ||
| 44 | TAAN | TARA TRANSPORTATION | SCAC3 | ||
| 45 | TAAN | TARUS PRODUCTS INCORPORATED | SCAC4 | ||
| 46 | TAAO | TRACOMSA SA CV | SCAC4 | ||
| 47 | TAAQ | T A A ALTERNATIVE INC | SCAC3 | ||
| 48 | TAAT | T & A TRANSPORT | SCAC4 | ||
| 49 | TAAV | TRANSPORTES AVELAIS ALARCON, SA DE | SCAC4 | ||
| 50 | TAB | Tågfrakt AB | 1996 - | S | svenska-lok.se |
| 51 | TAB | Tågfrakt AB | 1996 - | S | TRAFFIC |
| 52 | TAB | Tågfrakt AB | SE | VKM | |
| 53 | TABA | TRANSPORTES BAJA | SCAC4 | ||
| 54 | TABB | TRANSPORT A B | SCAC4 | ||
| 55 | TABC | TAB DELIVERY SERVICE | SCAC3 | ||
| 56 | TABC | TRANSPORT ALAIN BORDELEAU INC | SCAC4 | ||
| 57 | TABD | TABOR, DAROLD R INC | SCAC3 | ||
| 58 | TABD | TRIPLE A BUILDING CENTER | SCAC4 | ||
| 59 | TABE | TRANSPORT EASTERN INC | SCAC4 | ||
| 60 | TABF | TRANSPORTES AS | SCAC4 | ||
| 61 | TABG | TORRES ALEJO, LUIS FELIPE | SCAC4 | ||
| 62 | TABH | TABENKEN CORPORATION, THE | SCAC3 | ||
| 63 | TABI | TABS INC | SCAC3 | ||
| 64 | TABI | TABS INC | SCAC4 | ||
| 65 | TABK | TRANS-ATLANTIC BULK SHIPPING LTD | SCAC3 | ||
| 66 | TABL | T A B LEASING INC | SCAC3 | ||
| 67 | TABM | TRANS-ATLANTIC AGENCIES INC, BALTIM | SCAC3 | ||
| 68 | TABM | TRANS-ATLANTIC AGENCIES INC, BALTIM | SCAC4 | ||
| 69 | TABO | TABOR, BEN TRUCKING | SCAC4 | ||
| 70 | TABP | TAB TRANSPORTATION INC | SCAC3 | ||
| 71 | TABQ | TRANSPORT A B SERA INC | SCAC3 | ||
| 72 | TABQ | TRANSPORT ALAIN BOLDUC ENR | SCAC4 | ||
| 73 | TABR | TAB TRANSPORTATION, INC | SCAC3 | ||
| 74 | TABR | TAB TRANSPORTATION INC | SCAC4 | ||
| 75 | TABS | TABLOID SHIPPERS INC | SCAC3 | ||
| 76 | TABU | TABY SCHIFFAHRTS- UND SPEDITIONS GM | SCAC4 | ||
| 77 | TABV | TRI ALEXANDER TRANSPORTATION, INC. | SCAC4 | ||
| 78 | TABX | Theobald Animal By-Products Refinery | 7/1930-7/1932; 7/1937 (not listed) | NAKINA | |
| 79 | TABX | THEOBALD ANIMAL BY-PRODUCTS REFINERY | PWRC | ||
| 80 | TABY | WALTER TABY SPEDITION | PWRC | ||
| 81 | TAC | Turbot Air Cargo | ICAO1 | ||
| 82 | TACC | TAYLOR, CHAS C | SCAC3 | ||
| 83 | TACD | TRAMMELL CROW DISTRIBUTION CORP OF | SCAC3 | ||
| 84 | TACD | TRANSPORTES KRONOS | SCAC4 | ||
| 85 | TACE | TRANSPORTES ACOSTA GULUARTE | SCAC4 | ||
| 86 | TACF | T A C INC | SCAC3 | ||
| 87 | TACF | TRANSPORT ARMAND CARRIER & FILS INC | SCAC4 | ||
| 88 | TACG | TAC LOGISTICS INC | SCAC4 | ||
| 89 | TACH | TACOMA HAULING CO INC | SCAC3 | ||
| 90 | TACH | TACOMA HAULING CO INC | SCAC4 | ||
| 91 | TACHI | Tachikawa Bus | belongs to the Odakyu Group | J | TRAFFIC |
| 92 | TACJ | TRANSPORT AMERICAN COMMODITIES | SCAC3 | ||
| 93 | TACJ | TRANSPORT C J M P INC | SCAC4 | ||
| 94 | TACK | TACKNEYS EXPRESS | SCAC3 | ||
| 95 | TACL | TRANSCORD LEASING INC | SCAC3 | ||
| 96 | TACL | TRANS ATLANTIC CONTAINER LINES | SCAC4 | ||
| 97 | TACM | TRANSPORT AMERICA CORPORATION | SCAC3 | ||
| 98 | TACM | TRANSPORT AJ CUMING INC | SCAC4 | ||
| 99 | TACN | TRANSCORPS ENTERPRISES INC | SCAC3 | ||
| 100 | TACN | TRANSCORPS XPRESS COMPANY | SCAC4 |