| 1 | TCU | Inter Tropical Aviation | IATA: 3P, Callsign: Tropair, | SME | AVCODES |
| 2 | TCU | TransGlobal Airways Corporation | IATA: T7, Callsign: Transglobal, Commenced operations in July 2005. | RP | AVCODES |
| 3 | TCU | Transglobal Airways Corporation | | | ICAO1 |
| 4 | TCUA | TAC TOTAL AUTOMATION AND CONTROLS S | | | SCAC4 |
| 5 | TCUB | TSCHIRHARTS CUSTOM BILLIARDS INC | | | SCAC4 |
| 6 | TCUC | TRI-COUNTY CHEMICAL INC | | | SCAC3 |
| 7 | TCUE | TRI-COUNTY ENTERPRISES INC | | | SCAC3 |
| 8 | TCUE | TRANSPORT COUET INC | | | SCAC4 |
| 9 | TCUG | T C TRUCKING | | | SCAC3 |
| 10 | TCUI | TRADER CONSTRUCTION CO | | | SCAC3 |
| 11 | TCUK | TC TRUCKING | | | SCAC4 |
| 12 | TCUL | TRANS CONSULTANT | | | SCAC3 |
| 13 | TCUL | TRIPLE C TRANSPORT OF BROWNSVILLE I | | | SCAC4 |
| 14 | TCUN | TRANSPORT CONSULTANTS INTERNATIONAL | | | SCAC4 |
| 15 | TCUO | TRANSCOLD DISTRIBUTION LTD | | | SCAC4 |
| 16 | TCUQ | TC AUTO TRANSPORT INC | | | SCAC4 |
| 17 | TCUR | TOTAL COURIER | | | SCAC3 |
| 18 | TCUT | TRI COUNTY TRUCK TRANSPORTATION | | | SCAC3 |
| 19 | TCUT | TRI COUNTY TRUCK TRANSPORTATION | | | SCAC4 |
| 20 | TCUU | TRIFLEET LEASING HOLDING B.V. | | NL | BIC |
| 21 | TCUU | TRANS CONTAINER LEASING AG | | | SCAC3 |
