| 1 | TDM | Tandem Aero Ltd. | IATA: TQ, Callsign: Tandem, IATA Prefix: 038, Designator TQ reinstated by IATA. Ceased operations in April 2019. | MD | AVCODES |
| 2 | TDM | Tandem Aero | IATA: TQ | | ICAO1 |
| 3 | TDM | Tentera Darat Malaysia (Malaysian Army) | | MAL | TRAFFIC |
| 4 | TDMA | THEODAVIES MARINE AGENCIES INC. | | | SCAC3 |
| 5 | TDMA | TRANSPORT DENMAR INC | | | SCAC4 |
| 6 | TDMB | TRANSPORT D M | | | SCAC4 |
| 7 | TDMC | TANDEM CARTAGE INC | | | SCAC3 |
| 8 | TDMC | TRANSPORT DANIEL MARANDA INC | | | SCAC4 |
| 9 | TDMF | THREE-D (3-D) MOTOR FREIGHT INC | | | SCAC3 |
| 10 | TDMF | TOP DOG MANUFACTURING | | | SCAC4 |
| 11 | TDMG | TRADE MANAGEMENT SERVICES S A | | | SCAC3 |
| 12 | TDMH | T & D MACHINE HANDLING INC | | | SCAC4 |
| 13 | TDMI | TRANSPORT DENIS MASSE | | | SCAC3 |
| 14 | TDMJ | THREE DIMENSIONAL CHEMICAL CORP | | | SCAC4 |
| 15 | TDMK | TRADEMARK TRANSPORTATION INC | | | SCAC3 |
| 16 | TDMK | TRADEMARK TRANSPORTATION INC | | | SCAC4 |
| 17 | TDML | TRANSPORT & DISTRIBUTION M T L | | | SCAC4 |
| 18 | TDMM | TDM TRANSPORT INC | | | SCAC4 |
| 19 | TDMO | TRIDENT MOTOR CARRIER | | | SCAC3 |
| 20 | TDMP | TRANSPORT DOMINIC PERRAS INC | | | SCAC4 |
| 21 | TDMQ | TANDEM TRANSPORT COMPANY | | | SCAC3 |
| 22 | TDMR | TRADEMAR, S. A. | | | SCAC3 |
| 23 | TDMU | TECHNO 2000 TECHNOTAINER TECHNOLOGI | | | SCAC4 |
| 24 | TDMW | THREE D TRAILER RENTAL INC | | | SCAC4 |
