| 1201 | TBOX | Bell Oil & Gas Co. | 8/1920 | | NAKINA |
| 1202 | TBOX | TTX Co. | added 1/2003; 7/2005 | | NAKINA |
| 1203 | TBOX | TTX Co. | added 1/2003 | | NAKINA |
| 1204 | TBOX | *BELL OIL & GAS CO. | | | PWRC |
| 1205 | TBOX | +TTX CO. | | | PWRC |
| 1206 | TBOX | TTX Corporation | | | RSRV |
| 1207 | TBOX | TTX COMPANY | | | SCAC4 |
| 1208 | TBOY | TRUBOY FREIGHT INTERNATIONAL INC | | | SCAC4 |
| 1209 | TBPA | T B PALLETS LLC | | | SCAC4 |
| 1210 | TBPI | TRIBE TRANSPORT INC | | | SCAC4 |
| 1211 | TBPK | TAMKO BUILDING PRODUCTS INC | | | SCAC4 |
| 1212 | TBPL | TRAINS BOATS AND PLANES | | | SCAC3 |
| 1213 | TBPM | Tramvia Bologna P Malalbergo | | I | TRAFFIC |
| 1214 | TBPO | TAMAR BUILDING PRODUCTS | | | SCAC4 |
| 1215 | TBPR | TRANSPORT BRYAN PERREAULT | | | SCAC4 |
| 1216 | TBPU | CHINA RAILWAY TIELONG CONTAINER LOG CORP LTD | | PRC | BIC |
| 1217 | TBPU | CHINA RAILWAY TIELONG CONTAINER LOG | | | SCAC4 |
| 1218 | TBPX | Thunder Bay Port Authority | added 7/2009 | | NAKINA |
| 1219 | TBPX | THUNDER BAY PORT AUTHORITY | | | SCAC4 |
| 1220 | TBQ | Triair Bermuda Ltd | Established in 2001 . | BM | AVCODES |
| 1221 | TBQC | T B T CORP | | | SCAC3 |
| 1222 | TBQI | TEAK BOUTIQUE INC | | | SCAC4 |
| 1223 | TBQL | TB LOGISTICS | | | SCAC4 |
| 1224 | TBQT | THOROUGHBRED TRANSPORTATION | | | SCAC3 |
| 1225 | TBQU | CHINA RAILWAY TIELONG CONTAINER LOG | | | SCAC4 |
| 1226 | TBR | Tubelair | Callsign: Tubelair, | TN | AVCODES |
| 1227 | TBR | Air BTR Ltd | Callsign: Thracian, Established on 25 January 2012. Ceased Operations. | BG | AVCODES |
| 1228 | TBR | Tubelair | | | ICAO1 |
| 1229 | TBR | Touristenbahnen im Rheinland GmbH | | DE | VKM |
| 1230 | TBRA | TAUBRA CORPORATION | | | SCAC3 |
| 1231 | TBRC | TABOR CENTER TRANSPORTATION CO INC | | | SCAC3 |
| 1232 | TBRE | TIMBERLINE ENTERPRISES INC | | | SCAC3 |
| 1233 | TBRE | TRANSPORT ROBERT BOIRIN INC | | | SCAC4 |
| 1234 | TBRG | TRUCKING BY RICK GARCIA | | | SCAC3 |
| 1235 | TBRH | THRASHER BROTHERS TOURS | | | SCAC3 |
| 1236 | TBRI | TRA-BAR INC | | | SCAC3 |
| 1237 | TBRI | TZETZO BROS INC | | | SCAC4 |
| 1238 | TBRJ | THRASHER BROTHERS TOURS | | | SCAC4 |
| 1239 | TBRL | Trans-Bridge Lines | | USA | TRAFFIC |
| 1240 | TBRO | THREE BROTHERS TRUCKING | | | SCAC3 |
| 1241 | TBRO | TIMBER RIVER FARM COUNTRY ANTIQUES | | | SCAC4 |
| 1242 | TBRS | TABISH BROTHERS TRUCKING (A PARTNER | | | SCAC3 |
| 1243 | TBRT | THOMAS, BRYAN TRUCKING | | | SCAC3 |
| 1244 | TBRT | TRANSPORT BARRAUTE INC | | | SCAC4 |
| 1245 | TBRV | TIMBREN INDUSTRIES INC | | | SCAC4 |
| 1246 | TBRX | The Taylor Rail Group, Inc. | 7/2000-7/2005 (not listed) | | NAKINA |
| 1247 | TBRX | The Taylor Rail Group, Inc. | Jul-00 | | NRHS |
| 1248 | TBRX | TAYLOR RAIL GROUP, INC. | | | PWRC |
| 1249 | TBRX | Taylor Rail Group | | | RSRV |
| 1250 | TBRX | Taconic & Berkshire Rail Technologies | | USA | TRAFFIC |
| 1251 | TBRY | Thermal Belt Ry. | 1/1994-7/2005 | | NAKINA |
| 1252 | TBRY | Thermal Belt Ry. | 1/94-7/2000 | | NRHS |
| 1253 | TBRY | THERMAL BELT RAILWAY | | | PWRC |
| 1254 | TBRY | Thermal Belt Railway | | | RSRV |
| 1255 | TBRY | THERMAL BELT RAILWAY | | | SCAC3 |
| 1256 | TBS | Servicios Aereos Tribasa, S.A. de C.V. | Callsign: Tribasa, | MEX | AVCODES |
| 1257 | TBS | Kenya homes Limited d/b/a Timbis Air Services | IATA: 2T, Callsign: Timbis, IATA Prefix code 212 recalled. | EAK | AVCODES |
| 1258 | TBS | Servicios Aereos Tribasa | | | ICAO1 |
| 1259 | TBS | TRI-CITY CHARTER OF BOSSIER | | | SCAC4 |
| 1260 | TBSA | TEETERS BROTHERS CONTRACTORS INC | | | SCAC3 |
| 1261 | TBSA | TEETERS AGENCY & STEVEDORING | | | SCAC4 |
| 1262 | TBSB | TRANSPORTES BASASEACHIC SA DE CV | | | SCAC4 |
| 1263 | TBSC | T BAR S TRUCKING CO | | | SCAC3 |
| 1264 | TBSF | TBS FREIGHT FORWARDING | | | SCAC3 |
| 1265 | TBSF | TECHNICAL & BROKERAGE SERVICES S.R. | | | SCAC4 |
| 1266 | TBSG | TAMPA BAY SHIPPING INC. | | | SCAC3 |
| 1267 | TBSG | TOBASCO TRUCKING | | | SCAC4 |
| 1268 | TBSH | TAMPA BAY STEAMSHIP | | | SCAC3 |
| 1269 | TBSH | TRANSBEC S E C | | | SCAC4 |
| 1270 | TBSI | TRANSPORT BLUE STAR INC | | | SCAC3 |
| 1271 | TBSI | THERIAULT BOYS INC | | | SCAC4 |
| 1272 | TBSJ | TRIPLE B SPECIALIZED LLC | | | SCAC4 |
| 1273 | TBSN | TOBIN & SONS MOVING & STORAGE | | | SCAC3 |
| 1274 | TBSN | TOBIN & SONS MOVING AND STORAGE | | | SCAC4 |
| 1275 | TBSP | TERRABA SHIPPING CORP | | | SCAC3 |
| 1276 | TBSP | TURNBULL SPECIALTIES LTD | | | SCAC4 |
| 1277 | TBSQ | TRANSPORTES BRAVO SA DE CV | | | SCAC4 |
| 1278 | TBSR | T B S PETROLEUM LLC | | | SCAC4 |
| 1279 | TBST | TOTAL BUSINESS SYSTEMS INC | | | SCAC4 |
| 1280 | TBSU | TIMBER BUILDING SYSTEMS PTY LTD | | AUS | BIC |
| 1281 | TBSV | TOURIST BUS SERVICE | | | SCAC3 |
| 1282 | TBSV | TIMBER SERVICE LTD | | | SCAC4 |
| 1283 | TBSW | THOMAS, BILL & SONS WRECKER SERVICE | | | SCAC3 |
| 1284 | TBSX | The Trumbull Steel Co. | 7/1923 | | NAKINA |
| 1285 | TBSX | TRUMBULL STEEL CO. | | | PWRC |
| 1286 | TBSY | TBS TRUCKLINES INC | | | SCAC4 |
| 1287 | TBT | Tombouctou Aviation Company | Callsign: Tombouctou Air, | RMM | AVCODES |
| 1288 | TBTB | T & B TRUCKING INC | | | SCAC3 |
| 1289 | TBTC | TURNER BROS TRUCKING INC | | | SCAC3 |
| 1290 | TBTC | TROSEN, BRENT TRUCKING INC | | | SCAC4 |
| 1291 | TBTC | Tbilisi Transport Company | Real: TTC, City: Tbilisi | GE | TRAFFIC |
| 1292 | TBTF | TRI STATE TRANSPORTATION SERVICES L | | | SCAC4 |
| 1293 | TBTH | TRAILBLAZER TRUCKING | | | SCAC3 |
| 1294 | TBTI | TRANS BORO TRUCKING COMPANY | | | SCAC3 |
| 1295 | TBTK | TAURO BROTHERS TRUCKING CO THE | | | SCAC3 |
| 1296 | TBTK | TAURO BROTHERS TRUCKING CO, THE | | | SCAC4 |
| 1297 | TBTL | TURNER BROS TRUCKING LLC | | | SCAC4 |
| 1298 | TBTM | TRIPLE B TRUCKING | | | SCAC3 |
| 1299 | TBTO | THOMPSON, BILL TRANSPORT LIMITED | | | SCAC3 |
| 1300 | TBTO | TRI-BROS TRANSPORTATION LLC | | | SCAC4 |
