| 4101 | TGTJ | TARGET TRANSPORT INC | | | SCAC3 |
| 4102 | TGTK | TRIANGLE TRUCKING CO INC | | | SCAC3 |
| 4103 | TGTK | TOP GRADE TRUCKING INC | | | SCAC4 |
| 4104 | TGTL | TIGER TRUCKING LTD | | | SCAC3 |
| 4105 | TGTM | TARGET TRANSPORT LTD | | | SCAC4 |
| 4106 | TGTN | TARGET TRANSPORTATION | | | SCAC3 |
| 4107 | TGTP | T & G TRANSPORT | | | SCAC3 |
| 4108 | TGTQ | TARGET TRANSPORTATION | | | SCAC3 |
| 4109 | TGTR | TIGER TRANSPORTATION INC | | | SCAC3 |
| 4110 | TGTS | TIGER TRANSPORT SERVICE INC | | | SCAC3 |
| 4111 | TGTT | TRIANGLE TRANSIT INC | | | SCAC3 |
| 4112 | TGTU | NINGBO TRANSOCEAN GLOBAL TRANSPORTATION CORP.LTD | | PRC | BIC |
| 4113 | TGTV | TARGET TRUCKING CO INC | | | SCAC3 |
| 4114 | TGTV | TRANSPORTATION MANAGEMENT GROUP LLC | | | SCAC4 |
| 4115 | TGTW | T G TRUCKING | | | SCAC3 |
| 4116 | TGTY | T & G TRUCKING & FREIGHT CO | | | SCAC3 |
| 4117 | TGTY | T & G TRUCKING & FREIGHT INC | | | SCAC4 |
| 4118 | TGU | Transportes Aéreos Guatemaltecos | IATA: 5U, Callsign: Chapin, IATA Prefix: 911, | GCA | AVCODES |
| 4119 | TGUA | TRANSPORTES GUASAVE S A DE C V | | | SCAC4 |
| 4120 | TGUB | TRANSPORTES GUZMAN | | | SCAC4 |
| 4121 | TGUE | TRANSPORTES GUERRERO | | | SCAC4 |
| 4122 | TGUF | TRANS GULF TRANSPORTATION | | | SCAC4 |
| 4123 | TGUJ | TRANSPORT GUY LAJEUNESSE INC | | | SCAC4 |
| 4124 | TGUK | TAEGUK TOURS AND SIGHTSEEING | | | SCAC3 |
| 4125 | TGUK | TROCHU AUGER LTD | | | SCAC4 |
| 4126 | TGUN | TOP GUN TRANSPORT INC | | | SCAC3 |
| 4127 | TGUO | TRANSPORTES GUZ-MAR | | | SCAC4 |
| 4128 | TGUQ | TRANSPORT GURI | | | SCAC4 |
| 4129 | TGUT | TOP GUN TRUCKING INC | | | SCAC3 |
| 4130 | TGUV | TRANSPORTES GU-VI | | | SCAC4 |
| 4131 | TGV | SNCF | IATA: 2C, Railway Service | F | AVCODES |
| 4132 | TGV | SNCF | | F | TRAFFIC |
| 4133 | TGVN | TOGETHER VENTURES | | | SCAC4 |
| 4134 | TGVT | TGV TRANSPORT | | | SCAC4 |
| 4135 | TGVU | LOGIX CAPITAL LLC | | USA | BIC |
| 4136 | TGW | Tiger Airways Singapore Pte Ltd t/a Tigerair | IATA: TR, Callsign: Stripe, IATA Prefix: 388, Name change to Scoot Tigerair Pte. Ltd. (Merged with Scoot.) | SGP | AVCODES |
| 4137 | TGW | Scoot Tigerair Pte. Ltd. | IATA: TR, 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 |
| 4138 | TGW | Scoot Tigerair Pte. Ltd. d/b/a Scoot | IATA: TR, 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 |
| 4139 | TGW | Scoot Pte. Ltd. d/b/a Scoot | IATA: TR, 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 |
| 4140 | TGW | Tiger Airways | IATA: TR | | ICAO1 |
| 4141 | TGW | Tiger Airways Australia | IATA: TT | | ICAO1 |
| 4142 | TGW | Tiger Airways | Real: TGW, TT | AUS | TRAFFIC |
| 4143 | TGWC | TINGLE, W C COMPANY | | | SCAC4 |
| 4144 | TGWD | TRIGISTIX WAREHOUSING & DISTRIBUTIO | | | SCAC4 |
| 4145 | TGWF | TRANSPORT GEORGE WARREN & FILS INC | | | SCAC3 |
| 4146 | TGWL | TUGWELL OIL CO INC | | | SCAC4 |
| 4147 | TGWT | TGW TRUCKING | | | SCAC3 |
| 4148 | TGWT | TERRA REMOTE SENSING INC | | | SCAC4 |
| 4149 | TGX | Transair Gabon | Callsign: Transgabon, | G | AVCODES |
| 4150 | TGX | Transair Gabon | | | ICAO1 |
| 4151 | TGX | Tribes Gasoline Co. | 8/1920-7/1923 | | NAKINA |
| 4152 | TGX | Texas Gulf Sulphur Co. | added 11/1934; 7/1935-1/1946 | | NAKINA |
| 4153 | TGX | Texas Gulf Sulphur Co. | Apr-38 | | NRHS |
| 4154 | TGX | *TRIBES GASOLINE CO. | | | PWRC |
| 4155 | TGX | *TEXAS GULF SULPHUR CO. | | | PWRC |
| 4156 | TGX | Texas Gulf Sulphur Co. | | USA | TRAFFIC |
| 4157 | TGXA | TRIANGLE TRANSPORTATION LTD | | | SCAC4 |
| 4158 | TGXB | TANGO EXPRESS | | | SCAC4 |
| 4159 | TGXC | T G EXPRESS CO | | | SCAC3 |
| 4160 | TGXC | TRANSLOGISTIX LLC | | | SCAC4 |
| 4161 | TGXD | TRANSPORTES GALVEZ XPRESS | | | SCAC4 |
| 4162 | TGXE | TIGER EXPRESS | | | SCAC4 |
| 4163 | TGXG | TRIANGLE TRANSPORT & DISTRIBUTION S | | | SCAC4 |
| 4164 | TGXH | TIGUE TRANSPORT LLC | | | SCAC4 |
| 4165 | TGXI | TIGER EXPRESS INC | | | SCAC3 |
| 4166 | TGXI | TIGERX INC | | | SCAC4 |
| 4167 | TGXJ | TG TRANSPORTATION SERVICES | | | SCAC4 |
| 4168 | TGXK | TIGOR TRANSPORTATION INC | | | SCAC4 |
| 4169 | TGXL | TIGER LOGISTICS LLC | | | SCAC4 |
| 4170 | TGXO | TIG TRANSPORTATION | | | SCAC4 |
| 4171 | TGXP | T G TRANSPORT LLC | | | SCAC4 |
| 4172 | TGXQ | TRANSGLOBAL TRANSPORT INC | | | SCAC4 |
| 4173 | TGXR | TIGER EXPRESS | | | SCAC3 |
| 4174 | TGXR | TIGER EXPRESS LLC | | | SCAC4 |
| 4175 | TGXT | TOG TRANSPORT INC | | | SCAC4 |
| 4176 | TGXW | TUGGS TRANSPORTATION LLC | | | SCAC4 |
| 4177 | TGXY | T & G TRANSPORT LLC | | | SCAC4 |
| 4178 | TGY | Trans Guyana Airways | Callsign: Trans Guyana, | GUY | AVCODES |
| 4179 | TGY | Trans Guyana Airways | | | ICAO1 |
| 4180 | TGYD | TRANSPORTES REFRIGERADOS YAJAIRA IS | | | SCAC4 |
| 4181 | TGYE | TRANSPORTES GARCIA Y MARIN SA DE CV | | | SCAC4 |
| 4182 | TGYI | TRANS TECHNOLOGY INC | | | SCAC4 |
| 4183 | TGYK | TRI-GUY TRUCKS | | | SCAC4 |
| 4184 | TGYM | TRANSPORTES GYM LAREDO SA DE CV (MX | | | SCAC4 |
| 4185 | TGYR | TWO GUYS AND A TRUCK | | | SCAC4 |
| 4186 | TGYT | THREE GUYS TRUCKING & SURVEYING CO | | | SCAC3 |
| 4187 | TGZ | Airzena Georgian Airlines | IATA: A9, Callsign: Tamazi, IATA Prefix: 606, Name changed to Georgian Airways in August 2004. Designator A9 reinstated by IATA | GE | AVCODES |
| 4188 | TGZ | Air Zena | Callsign: Tamazi, Merged into Aircompany Airzena Georgian Airlines | GE | AVCODES |
| 4189 | TGZ | Georgian Airways | IATA: A9, Callsign: Tamazi, IATA Prefix: 606, Filed for bankruptcy on 31 December 2021. Name changed from Airzena Georgian Airlines in August 2004. Designator A9 reinstated by IATA. | GE | AVCODES |
| 4190 | TGZ | Georgian Airways | IATA: A9 | | ICAO1 |
| 4191 | TGZA | TRANSPORTES GONZALEZ | | | SCAC4 |
| 4192 | TGZM | TRANSPORTES GUZMAN | | | SCAC4 |
| 4193 | TGZN | TALLER GARZA | | | SCAC4 |
| 4194 | TGZQ | TRANSPORTES GURIERREZ | | | SCAC4 |
| 4195 | TGZS | TRANSPORTES GONZALEZ SA DE CV | | | SCAC4 |
| 4196 | TGZU | TOPGALLANT GROUP INC | | | SCAC3 |
| 4197 | TGZU | TOPGALLANT GROUP INC | | | SCAC4 |
| 4198 | TH | Transmile Air Services Sdn. Bhd. | ICAO: TSE, Callsign: Transmile, IATA Prefix: 539, Name changed to Raya Airways Sdn. Bhd. d/b/a Raya Airways. IATA designator changed from TH* | MAL | AVCODES |
| 4199 | TH | British Regional Airlines Limited | ICAO: BRT, Callsign: British, Name changed to British Airways CitiExpress Limited Merged with Brymon and British Airways Regional 31 March 2002. Formerly Manx Airlines (Europe) Ltd. | GB | AVCODES |
| 4200 | TH | Thai Airways Co. Ltd. | ICAO: TAC, Callsign: Thai Air, Merged into Thai International | T | AVCODES |
