| 8101 | TQPY | TRANSPORT D Y INC | | | SCAC4 |
| 8102 | TQQ | Tarco Aviation Company Limited | IATA: 3T, Callsign: Aviation Tarco, Established in 2009. Name changed from Tarco Air. ICAO desigantor changed from TRQ. ICAO callsign changed from Airtarco. | SUD | AVCODES |
| 8103 | TQR | Transportacion Aerea de Queretaro, S.A. de C.V. | Callsign: Transqueretaro, | MEX | AVCODES |
| 8104 | TQR | Transportacion Aerea De Queretaro | | | ICAO1 |
| 8105 | TQRB | TEMPLE, ROBERT | | | SCAC4 |
| 8106 | TQRC | TRI RIDGE TRANSPORT LLC | | | SCAC4 |
| 8107 | TQRE | TRANSPORTES REYNEROS INTERNACIONALE | | | SCAC4 |
| 8108 | TQRF | TRI TECH MODELS AND FIXTURES | | | SCAC4 |
| 8109 | TQRG | TOP RESULTS MARKETING | | | SCAC4 |
| 8110 | TQRH | TRANSPORT RHINO INC | | | SCAC4 |
| 8111 | TQRI | TRIPLE R INC | | | SCAC4 |
| 8112 | TQRN | TRANSPORTES RAPIDOS CONTRERAS | | | SCAC4 |
| 8113 | TQRO | TERRASOL | | | SCAC4 |
| 8114 | TQRR | TRA TRANSPORTATION INC | | | SCAC4 |
| 8115 | TQRS | TRANS-DOMINGUEZ | | | SCAC4 |
| 8116 | TQRU | TRANSPORTES QUIMICOS RAMIREZ SL | | E | BIC |
| 8117 | TQRU | TRANSPORTES QUIMICOS RAMIREZ SL | | | SCAC4 |
| 8118 | TQRV | TRANSPORTATION REPAIRS & SERVICES I | | | SCAC4 |
| 8119 | TQRY | T & R OIL CO | | | SCAC4 |
| 8120 | TQS | Aeroturquesa, S.A. de C.V. | Callsign: Aeroturquesa, | MEX | AVCODES |
| 8121 | TQS | Aeroturquesa | | | ICAO1 |
| 8122 | TQSA | TRANSPORTES QUINTERO SA DE CV | | | SCAC4 |
| 8123 | TQSH | TRANSPORTES SOTO E HIJOS S A DE C V | | | SCAC4 |
| 8124 | TQSK | T-QUIP SALES & RENTALS INC | | | SCAC4 |
| 8125 | TQSP | TRANSPORTES LEAL | | | SCAC4 |
| 8126 | TQST | TORQUE STORAGE TRAILERS, INC | | | SCAC1 |
| 8127 | TQST | TST LOGISTICS INC | | | SCAC4 |
| 8128 | TQTA | TOTRAN TRANSPORTATION SERVICES LTD | | | SCAC4 |
| 8129 | TQTB | TROYS QUALITY TRUCK BROKERAGE INC | | | SCAC4 |
| 8130 | TQTD | T Q TRUCKING | | | SCAC4 |
| 8131 | TQTF | TOTAL QUALITY TRUCKING INC | | | SCAC4 |
| 8132 | TQTL | TROWBRIDGE TRANSPORT LTD | | | SCAC4 |
| 8133 | TQTQ | TOP QUALITY TRUCKING INC | | | SCAC4 |
| 8134 | TQTS | TORQUE TRANSPORT LLC | | | SCAC4 |
| 8135 | TQTT | TEAM II INC | | | SCAC4 |
| 8136 | TQUB | TRANSPORT ARCTIKROUTE QUEBEC INC | | | SCAC4 |
| 8137 | TQUE | TWO FOUR ONE THREE- ZERO ZERO ONE F | | | SCAC4 |
| 8138 | TQUI | TRANS QUALITY INC | | | SCAC4 |
| 8139 | TQUJ | TRANSPORTES QUIJOTE | | | SCAC4 |
| 8140 | TQXP | TRANSAIR EXPRESS INC | | | SCAC4 |
| 8141 | TQYL | TOTAL QUALITY LOGISTICS LLC | | | SCAC4 |
| 8142 | TQZA | TRANSPORTES QUEZADA | | | SCAC4 |
| 8143 | TQZR | TARIN QUIROZ, RUBEN | | | SCAC4 |
| 8144 | TR | Transbrasil S.A. Linhas Aereas | ICAO: TBA, Callsign: Transbrasil, IATA Prefix: 653, Suspended Operations on 03 December 2001. ICAO callsign changed from Tango Romeo | BR | AVCODES |
| 8145 | TR | Compania de Aviacion Trans-Europa | Callsign: Trans Europa, | E | AVCODES |
| 8146 | TR | Tiger Airways Singapore Pte Ltd t/a Tigerair | ICAO: TGW, Callsign: Stripe, IATA Prefix: 388, Name change to Scoot Tigerair Pte. Ltd. (Merged with Scoot.) | SGP | AVCODES |
| 8147 | TR | Transbrasil S.A. Linhas Aereas | ICAO: TBA, Callsign: Tango Romeo, Suspended Operations on 03 December 2001. ICAO callsign changed to Transbrasil | BR | AVCODES |
| 8148 | TR | Scoot Tigerair Pte. Ltd. | ICAO: TGW, Callsign: Stripe, IATA Prefix: 668, Name changed to Scoot Tigerair Pte. Ltd. d/b/a Scoot. Name changed from Scoot Tigerair Pte. Ltd. d/b/a Scoot. ICAO Callsign changed to Scooter. Name change from Tiger Airways Singapore Pte Ltd t/a Tigerair. | SGP | AVCODES |
| 8149 | TR | Scoot Tigerair Pte. Ltd. d/b/a Scoot | ICAO: TGW, Callsign: Scooter, IATA Prefix: 668, Name changed to Scoot Pte. Ltd. d/b/a Scoot. Name changed from Scoot Tigerair Pte. Ltd. d/b/a Scoot. ICAO callsign changed from Stripe. Name change from Tiger Airways Singapore Pte Ltd t/a Tigerair. | SGP | AVCODES |
| 8150 | TR | Scoot Pte. Ltd. d/b/a Scoot | ICAO: TGW, Callsign: Scooter, IATA Prefix: 668, Name changed from Scoot Tigerair Pte. Ltd. d/b/a Scoot. ICAO callsign changed from Stripe. Name change from Tiger Airways Singapore Pte Ltd t/a Tigerair. | SGP | AVCODES |
| 8151 | TR | Tomahawk Ry., Ltd. Partnership | added 4/1992; eliminated 7/1993; 1/1994 (not listed); eliminated 10/1997; 7/2000 (not listed); added 10/2000; 7/2005 | | NAKINA |
| 8152 | TR | Tomahawk Ry., Ltd. Partnership | added 4/92; eliminated 7/93; 1/94; eliminated 10/97; 7/2000; added 10/2000 | | NRHS |
| 8153 | TR | TOMAHAWK RAILWAY, LP | | | PWRC |
| 8154 | TR | Tomahawk Railway | | | RSRV |
| 8155 | TR | TOMAHAWK RAILWAY L P | | | SCAC4 |
| 8156 | TR | National Rail Corporation - TrailerRail | | AUS | TRAFFIC |
| 8157 | TR | TR Trans Rail GmbH | | CH | VKM |
| 8158 | TRA | Transavia | IATA: HV, Callsign: Transavia, IATA Prefix: 979, | NL | AVCODES |
| 8159 | TRA | Basiq Air | IATA: HV, Merged back into Transavia. Low cost subsidary of Transavia | NL | AVCODES |
| 8160 | TRA | Trans Air, Inc. | Callsign: Trans Cab, | USA | AVCODES |
| 8161 | TRA | Transavia Holland B.V. | IATA: HV, Callsign: Transavia, | NL | AVCODES |
| 8162 | TRA | Transavia Holland | IATA: HV | | ICAO1 |
| 8163 | TRA | TENNESSEE RAILROAD CO. | | | PWRC |
| 8164 | TRA | | | RC | TRAFFIC |
| 8165 | TRAA | TRANSPORTES AMERICANOS S A DE C V | | | SCAC4 |
| 8166 | TRABANT | Trabant | | D | TRAFFIC |
| 8167 | TRAC | ONE TO THREE (1 TO 3) TRADE CO LLC | | | SCAC4 |
| 8168 | TRACC | Traccion Rail s.l. | | ES | VKM |
| 8169 | TRACK | ON-TRACK, s.r.o. | | CZ | VKM |
| 8170 | TRACKLESS | Trackless Transit | | US-NJ | TRAFFIC |
| 8171 | TRAD | TRADE CARRIER | | | SCAC1 |
| 8172 | TRAD | TRIAD TRANSPORTATION INC | | | SCAC4 |
| 8173 | TRADB | Traditionsbus Berlin | | D | TRAFFIC |
| 8174 | TRAF | TRANSPORTES REALIZA S A | | | SCAC4 |
| 8175 | TRAG | TRADING POST | | | SCAC4 |
| 8176 | TRAH | TRANSPORTES AGUIRRE | | | SCAC4 |
| 8177 | TRAI | TRIPLE A TRANSPORT INC | | | SCAC4 |
| 8178 | TRAIL | Transrail Freight | | GB | TRAFFIC |
| 8179 | TRAIN | Train Rental International | | EU | TRAFFIC |
| 8180 | TRAK | Trakcia AD / Тракция АД | | BG | VKM |
| 8181 | TRAKC | TRAKCE A.S. Spółka Akcyjna Oddzial w Polsce | | PL | VKM |
| 8182 | TRAL | TRANSYSTEMS LLC | | | SCAC4 |
| 8183 | TRAM | American Refrigerator Transit Co. | added 10/1961; eliminated 7/1962 | | NAKINA |
| 8184 | TRAM | AMERICAN REFRIGERATOR TRANSIT CO. | | | PWRC |
| 8185 | TRAM | TRANSMAXX | | | SCAC4 |
| 8186 | TRAME | TRAMESA S.A | | ES | VKM |
| 8187 | TRAMO | TRAMO RAIL, a.s. | | CZ | VKM |
| 8188 | TRAN | TRANSCON LINES | | | PWRC |
| 8189 | TRAN | TRANSOCEAN MARITIME AGENCIES SA | | | SCAC4 |
| 8190 | TRANS | TRANSPORTSERVIS, spol. s r.o. | | CZ | VKM |
| 8191 | TRANSCO | TransCo | | FAN | TRAFFIC |
| 8192 | TRANSGOR | Transgór Spółka Akcyjna – przedsiębiorstwo transportowe z Mysłowic | | PL | TRAFFIC |
| 8193 | TRANSKOM | Transkom s.j. | City: Piekary Śląskie | PL | TRAFFIC |
| 8194 | TRANSLUB | Przedsiębiorstwo Transportowe Translub sp. z o.o. | | PL | TRAFFIC |
| 8195 | TRANSLUD | TRANSLUD Przewozy Autokarowe Jan Domosławski | | PL | TRAFFIC |
| 8196 | TRANSMAC | Transportes Urbanos de Macau | | | TRAFFIC |
| 8197 | TRANSN | Transports Publics Neuchâtelois | | CH | TRAFFIC |
| 8198 | TRAP | TRANSPORT SERVICE CO | | | SCAC4 |
| 8199 | TRAPL | Trakcja S.A. | | PL | VKM |
| 8200 | TRAQ | TRANSPORTERS | | | SCAC4 |
