| 1 | TMR | Timberline Air | Callsign: Timber, | CDN | AVCODES |
| 2 | TMR | Tamara Niger Aviation SA | Callsign: Tamara, | RN | AVCODES |
| 3 | TMR | Timberline Air | | | ICAO1 |
| 4 | TMR | Transports de Martigny et Régions | | CH | TRAFFIC |
| 5 | TMR | TMR Transports de Martigny et Régions SA | | CH | VKM |
| 6 | TMRA | TRANSP MARIO ALBERTO CAVAZOS TAMEZ | | | SCAC4 |
| 7 | TMRA | TMRail AB | | S | TRAFFIC |
| 8 | TMRB | TRANS-MARBER | | | SCAC4 |
| 9 | TMRC | TREMBLAYS MOTOR COACH LLC | | | SCAC4 |
| 10 | TMRD | TRANSPORT MAURICE RODRIGUE INC | | | SCAC4 |
| 11 | TMRE | TRANSPORT MARIO COUTURE INC | | | SCAC4 |
| 12 | TMRG | TRANSPORTES MANUEL RODRIGUEZ HERNAN | | | SCAC4 |
| 13 | TMRH | TRIMHOUSE INC | | | SCAC4 |
| 14 | TMRI | T MARC RICE GROUP | | | SCAC4 |
| 15 | TMRL | TRANSPORTES MARLIN | | | SCAC4 |
| 16 | TMRO | TOMPKINS, ROBERT W | | | SCAC4 |
| 17 | TMRP | TRANS-MART TRANSPORTATION SERVICES, INC | | | SCAC1 |
| 18 | TMRP | TRANS-MART TRANSPORTATION SERVICES | | | SCAC4 |
| 19 | TMRQ | TRANSPORTES MARTIN | | | SCAC4 |
| 20 | TMRT | TRANSPORT MARTIN LACOSTE | | | SCAC4 |
| 21 | TMRU | TECMARINE LINES | | | SCAC1 |
| 22 | TMRW | Tacoma Rail | | | RSRV |
| 23 | TMRW | THOMPSON TIMBER TRANSPORT INC | | | SCAC4 |
| 24 | TMRW | The Texas Mexican Ry. Co | Real: TM | USA | TRAFFIC |
| 25 | TMRX | Peter Kiewitt Sons' Co. | 1/1980; eliminated 7/1981 | | NAKINA |
| 26 | TMRX | Tierra Madre Consultants, Inc. | 7/2005 (not listed) | | NAKINA |
| 27 | TMRX | Peter Kiewitt Sons' Co. | 1/80; eliminated 7/81 | | NRHS |
| 28 | TMRX | *PETER KIEWITT SONS' CO. | | | PWRC |
| 29 | TMRX | *TACOMA RAIL | | | PWRC |
| 30 | TMRX | +TIERRA MADRE CONSULTANTS, INC. | | | PWRC |
| 31 | TMRX | TIERRA MADRE CONSULTANTS INC | | | SCAC4 |
