| 7301 | TOS | Tropic Air Limited | IATA: 9N, Callsign: Tropiser, Designator PM recalled by IATA | BH | AVCODES |
| 7302 | TOS | Tropic Air | IATA: PM | | ICAO1 |
| 7303 | TOSA | TRAJOSA | | | SCAC4 |
| 7304 | TOSA | Tosa Electric Railway | City: Torun | J | TRAFFIC |
| 7305 | TOSB | TWO ONE SIX NINE FIVE ZERO TWO (216 | | | SCAC4 |
| 7306 | TOSC | TORRES, CARLOS L TRUCKING | | | SCAC4 |
| 7307 | TOSE | TEAM OCEAN SERVICES INC | | | SCAC4 |
| 7308 | TOSG | TRANSOCEANIC SHIPPING COMPANY INC | | | SCAC1 |
| 7309 | TOSI | TRANSPORT O S I INC | | | SCAC4 |
| 7310 | TOSJ | THREE ONE SEVEN FOUR FIVE T | | | SCAC4 |
| 7311 | TOSK | TROSKA TRUCKING INC | | | SCAC4 |
| 7312 | TOSM | TOTAL SCRAP | | | SCAC4 |
| 7313 | TOSN | TWO ONE SEVEN ZERO EIGHT EIGHT THRE | | | SCAC4 |
| 7314 | TOSO | TRANSPORT STAN INC | | | SCAC4 |
| 7315 | TOSP | TWO ONE SIX SIX EIGHT EIGHT TWO (21 | | | SCAC4 |
| 7316 | TOSQ | TWO ONE SEVEN FOUR NINE ZERO NINE | | | SCAC4 |
| 7317 | TOSS | TRAMOSSA | | | SCAC4 |
| 7318 | TOST | TOWNS TRANSPORTATION INC | | | SCAC4 |
| 7319 | TOSU | TRANSOCEAN EQUIPMENT LTD. | | HK | BIC |
| 7320 | TOSV | TOPOLIA SHIPPING SERVICES S A | | | SCAC4 |
| 7321 | TOSY | TO SUIT YOUR FANCY | | | SCAC4 |
| 7322 | TOT | Titan Airways Ltd. | Callsign: Zap, ICAO designator changed to AWC | GB | AVCODES |
| 7323 | TOT | Anivia Servicos Aereos Ltda | Callsign: Total Express, Planned start-up will operate obo Total Express. | BR | AVCODES |
| 7324 | TOT | Totavia | | | ICAO1 |
| 7325 | TOT | Torstein Olstad Transport AS | | N | TRAFFIC |
| 7326 | TOTD | TRIPLE O TRANSPORT LTD | | | SCAC4 |
| 7327 | TOTE | TOTEM OCEAN TRAILER EXPRESS, INC. | | | PWRC |
| 7328 | TOTE | TOTEM OCEAN TRAILER EXPRESS, INC | | | SCAC1 |
| 7329 | TOTE | TOTEM OCEAN TRAILER EXPRESS INC | | | SCAC4 |
| 7330 | TOTF | TODD TRANSIT, INC | | | SCAC1 |
| 7331 | TOTF | TODD TRANSIT INC | | | SCAC4 |
| 7332 | TOTI | TODAY TRANSFER INC | | | SCAC4 |
| 7333 | TOTJ | TAINO TRANSPORT | | | SCAC4 |
| 7334 | TOTL | TOTAL TRANSPORTATION & DISTRIBUTION | | | SCAC4 |
| 7335 | TOTM | TOTEM RESORTS | | | SCAC4 |
| 7336 | TOTN | TOTAL TRANSPORTATION SOLUTIONS INC | | | SCAC4 |
| 7337 | TOTP | TORO TRANSPORTATION LLC | | | SCAC4 |
| 7338 | TOTP | Transport Osobowy Tadeusz Powichrowski | City: Zabrze | PL | TRAFFIC |
| 7339 | TOTQ | TRANSPORT QUWIC INC | | | SCAC4 |
| 7340 | TOTR | TROTTER, V | | | SCAC4 |
| 7341 | TOTT | TOTALLY CONFUSED TRANSPORTATION | | | SCAC4 |
| 7342 | TOTU | SERVIZI LOGISTICI INTEGRATI S.R.L | | I | BIC |
| 7343 | TOTU | TIPHOOK CONTAINER | | | PWRC |
| 7344 | TOTU | Tiphook Container | | | RSRV |
| 7345 | TOTU | TOTI TRANS SRL | | | SCAC4 |
| 7346 | TOTV | THOMPSON TRUCKING INC | | | SCAC4 |
| 7347 | TOTX | Cotco, Inc. | added 4/1997; 7/2000; eliminated 4/2003 | | NAKINA |
| 7348 | TOTX | Western Evergreen Investments LLC | added 4/2003; eliminated 7/2003; eliminated 10/2003; 7/2005 (not listed) | | NAKINA |
| 7349 | TOTX | Cotco, Inc. | added 4/97; 7/2000 | | NRHS |
| 7350 | TOTX | WESTERN EVERGREEN INVESTMENTS LLC [COTCO INCORPORATED] | | | PWRC |
| 7351 | TOTX | Cotco | | | RSRV |
| 7352 | TOTX | WESTERN EVERGREEN INVESTMENTS LLC | | | SCAC4 |
| 7353 | TOTY | TORTILLERIA ANY | | | SCAC4 |
| 7354 | TOU | Touchstone Aviation | | GB | AVCODES |
| 7355 | TOUAX | Touax | | F | TRAFFIC |
| 7356 | TOUAX | TOUAX RAIL LIMITED | | FR | VKM |
| 7357 | TOUC | TOUCHE BAKERY INC | | | SCAC4 |
| 7358 | TOUE | TRANSPORT MARTIN OUELLET | | | SCAC4 |
| 7359 | TOUH | TOTALUP | | | SCAC4 |
| 7360 | TOUI | TR TRANSPORTATION NETWORK LLC | | | SCAC4 |
| 7361 | TOUL | TOUREL LTD | | | SCAC4 |
| 7362 | TOUL | | City: Toulouse | F | TRAFFIC |
| 7363 | TOUM | TOURNAMENT TOWERS INC | | | SCAC4 |
| 7364 | TOUN | TRANSPORTATION OUTSOURCE PARTNERS ( | | | SCAC4 |
| 7365 | TOUO | TRANSPORT RESOURCES LTD | | | SCAC4 |
| 7366 | TOUR | TOUR COACH TRANSPORTATION | | | SCAC4 |
| 7367 | TOUW | TOUR WEST AMERICA INC | | | SCAC4 |
| 7368 | TOV | Tooele Valley Ry. Co. | 1/1975-1/1980; eliminated 1/1982 | | NAKINA |
| 7369 | TOV | Tooele Valley Ry. Co. | 1/75-1/80; eliminated 1/82 | | NRHS |
| 7370 | TOV | TOOLE VALLEY RAILWAY | | | PWRC |
| 7371 | TOV | Tooele Valley Railway | | | RSRV |
| 7372 | TOVA | TRAKCE, a.s. | | CZ | VKM |
| 7373 | TOVD | TRANSPORT OVERLOAD RENTALS INC | | | SCAC4 |
| 7374 | TOVI | TRIO VIDEO | | | SCAC4 |
| 7375 | TOVL | TRANSPORTATION VENTURES I LLC | | | SCAC4 |
| 7376 | TOVO | TRANSPORTES VELOZ | | | SCAC4 |
| 7377 | TOVP | TRANSPORTES SERVICIOS ESPECIALES | | | SCAC4 |
| 7378 | TOVR | TOLVSTAD, RANDY | | | SCAC4 |
| 7379 | TOVT | TRITON OVERSEAS TRANSPORT INC | | | SCAC4 |
| 7380 | TOVX | Tovrea Packing Co. | 7/1932-4/1938 | | NAKINA |
| 7381 | TOVX | Tovrea Packing Co. (Mather Stock Car Co.) | Apr-38 | | NRHS |
| 7382 | TOVX | TOVREA PACKING CO. | | | PWRC |
| 7383 | TOW | Tower Air, Inc. | IATA: FF, Callsign: Tee Air, Ceased operation 10 October 2000. Designator FF recalled by IATA | USA | AVCODES |
| 7384 | TOW | AirTanker Ltd | IATA: 9L, Callsign: Towline, ICAO designator changed from FST | GB | AVCODES |
| 7385 | TOW | Tower Air | | | ICAO1 |
| 7386 | TOWA | Towada Kanko Electric Railway | | J | TRAFFIC |
| 7387 | TOWE | TOWNE AIR FREIGHT, INC | | | SCAC1 |
| 7388 | TOWE | TOWNE AIR FREIGHT INC | | | SCAC4 |
| 7389 | TOWF | TRANSPORTES OSCAR WATSON | | | SCAC4 |
| 7390 | TOWN | TOWN OIL CO | | | SCAC4 |
| 7391 | TOWP | TITLETOWN OIL TRANSPORT INC | | | SCAC4 |
| 7392 | TOWQ | TOWER GROUP INTERNATIONAL | | | SCAC4 |
| 7393 | TOWR | TOWERSCAN | | | SCAC4 |
| 7394 | TOWS | TOWNSEND TRUCKING LLC | | | SCAC4 |
| 7395 | TOWX | Titusville Oil Works | 8/1920-7/1930 | | NAKINA |
| 7396 | TOWX | Town & Country Co-op Inc. | added 1/2004; 7/2005 | | NAKINA |
| 7397 | TOWX | *TITUSVILLE OLI WORKS | | | PWRC |
| 7398 | TOWX | +TOWN & COUNTRY CO-OP INC. | | | PWRC |
| 7399 | TOWX | TOWN & COUNTRY CO-OP INC | | | SCAC4 |
| 7400 | TOX | Neosiam Airways | | | ICAO1 |
