| 1301 | TBTP | TB TRANSPORT | | | SCAC4 |
| 1302 | TBTQ | TAB & SON TRUCKING INC | | | SCAC3 |
| 1303 | TBTR | TORO BROS TRUCKING OF MASS, INC | | | SCAC3 |
| 1304 | TBTR | TRAVILLE BULK TRANSPORT LLC | | | SCAC4 |
| 1305 | TBTS | TIBBITTS, A B | | | SCAC3 |
| 1306 | TBTS | T-BONE TRUCK STOP | | | SCAC4 |
| 1307 | TBTT | T B TRANSPORT | | | SCAC3 |
| 1308 | TBTV | THUNDERBIRD TRAVEL AGENCY | | | SCAC3 |
| 1309 | TBTY | THOMPSON BROTHERS | | | SCAC3 |
| 1310 | TBTZ | THOMAS BLAKE TRUCKING | | | SCAC4 |
| 1311 | TBUL | TURNBULL OIL INC | | | SCAC4 |
| 1312 | TBUT | TRANSBULK TRUCKING INC | | | SCAC3 |
| 1313 | TBUT | TRANSPORT BUTTERFLY EXPRESS | | | SCAC4 |
| 1314 | TBUU | TRUE BLUE CONTAINERS (2005) PTY LTD | | AUS | BIC |
| 1315 | TBV | Trinity and Brazos Valley Railway | | | RSRV |
| 1316 | TBVD | TRANSPORTES BENAVIDES | | | SCAC4 |
| 1317 | TBVI | TRANSPORT BROVARD INC | | | SCAC4 |
| 1318 | TBVL | TRANSPORTES BERVAL | | | SCAC4 |
| 1319 | TBVQ | TRIPLE B VALLEY EXPRESS CO | | | SCAC3 |
| 1320 | TBVT | TEAM SNUBBING SERVICES LTD | | | SCAC4 |
| 1321 | TBVU | TRADING BUREAU VINK | | | SCAC3 |
| 1322 | TBWD | TAMPA BAY WAREHOUSE & DISTRIBUTION | | | SCAC3 |
| 1323 | TBWE | TRANSPORT B W ENR | | | SCAC3 |
| 1324 | TBWN | TUMBLEWEED TRANSPORTATION | | | SCAC4 |
| 1325 | TBWT | TBW TRUCKING CO | | | SCAC4 |
| 1326 | TBX | Tobago Express | Callsign: Tabex, ICAO Callsign changed from Tobago Express | TT | AVCODES |
| 1327 | TBX | Tobago Express | Callsign: Tobago Express, ICAO Callsign changed to Tabex | TT | AVCODES |
| 1328 | TBX | Tobago Express | | | ICAO1 |
| 1329 | TBX | Turnbow Oil Corp. | 8/1920-7/1923 | | NAKINA |
| 1330 | TBX | TURNBOW OIL CORP. | | | PWRC |
| 1331 | TBXA | TRANS BORDER XPRESS INC | | | SCAC4 |
| 1332 | TBXB | TLB TRANSPORTATION LLC | | | SCAC4 |
| 1333 | TBXC | THEEBAN TRANSPORT INC | | | SCAC4 |
| 1334 | TBXE | TABOR EXPRESS INC | | | SCAC4 |
| 1335 | TBXH | TRUE BLUE TRANSPORTATION | | | SCAC4 |
| 1336 | TBXI | T B X INCORPORATED | | | SCAC3 |
| 1337 | TBXK | TRIBE EXPRESS INC | | | SCAC4 |
| 1338 | TBXL | TRANSBORDER EXPRESS LTD | | | SCAC3 |
| 1339 | TBXL | THUNDERBOLT ENTERPRISES INC | | | SCAC4 |
| 1340 | TBXM | TBX MOTOR EXPRESS INC | | | SCAC3 |
| 1341 | TBXM | TIMBER TRANSPORT INC | | | SCAC4 |
| 1342 | TBXN | TRUE BLUE TRANSPORTATION INC | | | SCAC4 |
| 1343 | TBXO | TIMBER TRAIL TRANSPORT LLC | | | SCAC4 |
| 1344 | TBXP | TILBURY EXPEDITE LTD | | | SCAC3 |
| 1345 | TBXQ | TBT TRANSPORT INC | | | SCAC4 |
| 1346 | TBXS | TIMBER EXPRESS TRUCKING | | | SCAC4 |
| 1347 | TBXU | BOMAG MARINI EQUIPAMENTOS LTDA | | BR | BIC |
| 1348 | TBXV | TURNBULL EXCAVATING LTD | | | SCAC4 |
| 1349 | TBXY | TOBIAS TRANSPORT | | | SCAC4 |
| 1350 | TBY | TOBY TOURS | | | SCAC4 |
| 1351 | TBYD | TIDEBAY LTD | | | SCAC4 |
| 1352 | TBYL | TEEBERRY LOGISTICS LLC | | | SCAC4 |
| 1353 | TBYQ | TRIBUNA DEL YAQUI S A DE C V | | | SCAC4 |
| 1354 | TBYR | TREMBLAY, RENE LTEE | | | SCAC4 |
| 1355 | TBYW | TOBY, WILLIAM J TRUCKING | | | SCAC4 |
| 1356 | TBZ | ATA Airlines | IATA: I3, Callsign: Atalar Air, Established in 2009. Designator I3 recalled by IATA. | IR | AVCODES |
| 1357 | TBZ | ATA Airlines | Callsign: Atalar Air, Established in 2009. Designator I3 recalled by IATA. | IR | AVCODES |
| 1358 | TBZA | TRANSPORTES BAEZA | | | SCAC4 |
| 1359 | TBZL | TRAIL BLAZER TRUCK LINE INC | | | SCAC3 |
| 1360 | TBZR | TRAIL BLAZERS INC | | | SCAC3 |
| 1361 | TBZR | TRANSPORTES BAEZ | | | SCAC4 |
| 1362 | TBZT | TRAIL BLAZER TRANSPORTATION | | | SCAC3 |
| 1363 | TBZT | TALLER BALTAZAR | | | SCAC4 |
| 1364 | TC | Air Tanzania Corporation | ICAO: ATC, Callsign: Tanzania, IATA Prefix: 197, Name changed to Air Tanzania Company Ltd. ICAO callsign changed from Tango Charlie | EAT | AVCODES |
| 1365 | TC | Air Tanzania Company Limited | ICAO: ATC, Callsign: Tanzania, IATA Prefix: 197, Name changed from Air Tanzania Corporation. ICAO callsign changed from Tango Charlie | EAT | AVCODES |
| 1366 | TC | Transportes Aéreos de Integración, S.A. (TAISA) | | CR | AVCODES |
| 1367 | TC | Air Tanzania Corporation | ICAO: ATC, Callsign: Tango Charlie, IATA Prefix: 197, ICAO callsign changed to Tanzania | EAT | AVCODES |
| 1368 | TC | Tennessee Central Ry. Co. | 8/1920-10/1966 | | NAKINA |
| 1369 | TC | Tennessee Central Ry. Co. | 4/38-10/66 | | NRHS |
| 1370 | TC | *TENNESSEE CENTRAL RR | | | PWRC |
| 1371 | TC | *TIMKEN COMPANY | | | PWRC |
| 1372 | TC | *TRANS OCEAN LTD. | | | PWRC |
| 1373 | TC | TEMPLE & CENTRAL TEXAS RAILWAY INC | | | SCAC4 |
| 1374 | TC | Tennessee Central Railway | | USA | TRAFFIC |
| 1375 | TC&G | Tucson, Cornelia and Gila Bend R.R. Co. | 7/1923-4/1938 | | NAKINA |
| 1376 | TC&G | Tucson, Cornelia and Gila Bend R.R. Co. | Apr-38 | | NRHS |
| 1377 | TC&G | TUCSON, CORNELIA & GILA BEND RAILROAD CO. | | | PWRC |
| 1378 | TCA | Tropican Air Services | Callsign: Tropicana, | ET | AVCODES |
| 1379 | TCA | Tradecraft Nigeria LTd | Callsign: Tradecraft, | WAN | AVCODES |
| 1380 | TCA | Tropican Air Services | | | ICAO1 |
| 1381 | TCAA | TRANSPORTES CAAR | | | SCAC4 |
| 1382 | TCAC | TRACE AIR CARGO | | | SCAC3 |
| 1383 | TCAC | TRANSPORTADORA CAS | | | SCAC4 |
| 1384 | TCAE | TRANS CONTINENTAL AUTO EXCHANGE INC | | | SCAC3 |
| 1385 | TCAF | TRANSCON AIR FREIGHT | | | SCAC3 |
| 1386 | TCAG | THOMAS, C A LEASING INC | | | SCAC3 |
| 1387 | TCAG | TRANSPORTES CANPERSA | | | SCAC4 |
| 1388 | TCAH | TREALMONT CHARTERING INC AFFRETEMEN | | | SCAC4 |
| 1389 | TCAI | TWIN CITY AIR FREIGHT PICK UP & DEL | | | SCAC3 |
| 1390 | TCAK | TRANSPORTES CAZARES | | | SCAC4 |
| 1391 | TCAL | TRANSCONTINENTAL LOGISTICS LLC | | | SCAC4 |
| 1392 | TCAM | TRANSPORT CORPORATION OF AMERICA IN | | | SCAC3 |
| 1393 | TCAM | TRANSPORT CORPORATION OF AMERICA IN | | | SCAC4 |
| 1394 | TCAN | TRANSPORTES CANALES SA DE CV | | | SCAC4 |
| 1395 | TCAO | TRICARICO, STEVE TRUCKING | | | SCAC3 |
| 1396 | TCAP | TRANS-CAR INC | | | SCAC4 |
| 1397 | TCAQ | TRANS CAL MOTOR EXPRESS | | | SCAC3 |
| 1398 | TCAR | TRANS-CARRIERS INC | | | SCAC4 |
| 1399 | TCAS | TRANSPORTES CLAPAGA S A DE C V | | | SCAC4 |
| 1400 | TCAT | TRACTORS & TRUCK INC | | | SCAC3 |
