| 1 | TM | Direccao de Exploacao doe Transportes Aereos (DETA) | Callsign: Deta, Name changed to LAM - Linhas Aereas de Mocambique | MOC | AVCODES |
| 2 | TM | Titan Airways Malta Limited | ICAO: TMT, Callsign: Kapow, IATA Prefix: 183, | M | AVCODES |
| 3 | TM | The Texas-Mexican Ry. Co. | 4/1947-7/2005 | | NAKINA |
| 4 | TM | The Texas Mexican Ry. Co. | 1/52-7/2000 | | NRHS |
| 5 | TM | TEXAS MEXICAN RAILWAY | | | PWRC |
| 6 | TM | Texas Mexican Railway (Kansas City Southern Railway) | | | RSRV |
| 7 | TM | TEXAS MEXICAN RAILWAY COMPANY, THE | | | SCAC4 |
| 8 | TM | | City: Madrid | E | TRAFFIC |
| 9 | TM | Transchem Sp. zo. o. | | PL | VKM |
| 10 | TMA | Trans Mediterranean Airways (TMA) | IATA: TL, Callsign: Tango Lima, IATA Prefix: 270, Designator TL recalled by IATA | RL | AVCODES |
| 11 | TMA | Trans Mediterranean Airways S.A.L. | IATA: T2, Callsign: Tango Lima, IATA Prefix: 370, | RL | AVCODES |
| 12 | TMA | Trans Mediterranean Airways S.A.L. | IATA: N2, Callsign: Tango Lima, IATA Prefix: 673, Ceased operations. | RL | AVCODES |
| 13 | TMA | Trans Mediterranean Airlines | IATA: TL | | ICAO1 |
| 14 | TMAB | TRANSPORTES MARLO | | | SCAC4 |
| 15 | TMAC | TRINITAS MARITIME CARRIERS BV | | | SCAC4 |
| 16 | TMAD | TRANSPORTES MARSA S A DE C V | | | SCAC4 |
| 17 | TMAF | TRANS-MAR | | | SCAC4 |
| 18 | TMAG | TRANSMAR DISTRIBUTION SERVICES LTD | | | SCAC4 |
| 19 | TMAH | THOMAS, ANTHONY H | | | SCAC4 |
| 20 | TMAI | TRANSMARITIME INC | | | SCAC4 |
| 21 | TMAL | TEAM ELMERS TRUCKING | | | SCAC4 |
| 22 | TMAO | TUCSON MOVING AND STORAGE INC | | | SCAC4 |
| 23 | TMAQ | TRANSMAQUILA INC | | | SCAC4 |
| 24 | TMAR | TATMAR CO. | | | PWRC |
| 25 | TMAS | TRANSPORTACIONES MAYA | | | SCAC4 |
| 26 | TMAS | TARALDSVIK Maskin AS | | NO | VKM |
| 27 | TMAV | TELECOM TRANSPORT SERVICES INC | | | SCAC4 |
| 28 | TMAW | TERMAT ENTERPRISES | | | SCAC4 |
| 29 | TMAX | Tennessee River Pulp & Paper Co. | added 7/1975; 1/1980; eliminated 10/1991 | | NAKINA |
| 30 | TMAX | Packaging Corp. of America | added 10/1991; 1/1994; eliminated 7/1998 | | NAKINA |
| 31 | TMAX | Tenneco Packaging Inc. | added 7/1998 | | NAKINA |
| 32 | TMAX | Tenneco Packaging Co. | 7/2000 | | NAKINA |
| 33 | TMAX | Tenneco Packaging Inc. | eliminated 4/2005 | | NAKINA |
| 34 | TMAX | Tennessee River Pulp & Paper Co. | added 7/75; 1/80; eliminated 10/91 | | NRHS |
| 35 | TMAX | Packaging Corp. of America | added 10/91; 1/94; eliminated 7/98 | | NRHS |
| 36 | TMAX | Tenneco Packaging Inc. | added 7/98 | | NRHS |
| 37 | TMAX | Tenneco Packaging Co. | Jul-00 | | NRHS |
| 38 | TMAX | TENNECO PACKAGING COMPANY [PACKAGING CORPORATION OF AMERICA; TENNESSEE RIVER PULP & PAPER CO.] | | | PWRC |
| 39 | TMAX | Tennessee River Pulp and Paper | | | RSRV |
| 40 | TMAY | TEEGRUS MANAGEMENT & AGENCY INC | | | SCAC4 |
| 41 | TMB | On Safari Airline | Callsign: Safari Express, | ZA | AVCODES |
| 42 | TMB | Fly Dreams d/b/a Volato | Callsign: Tombo, Name changed to Volato, Inc. | USA | AVCODES |
| 43 | TMB | Volato, Inc. | Callsign: Tombo, Name changed from Fly Dreams d/b/a Volato. | USA | AVCODES |
| 44 | TMB | | City: Barcelona | E | TRAFFIC |
| 45 | TMB | Tramway du Mont Blanc | | FR | VKM |
| 46 | TMBB | TRIPLE M TRANSPORT INC | | | SCAC4 |
| 47 | TMBE | TRANSPORT MARCEL BEGIN INC | | | SCAC4 |
| 48 | TMBH | TRANSPORTES MADA | | | SCAC4 |
| 49 | TMBI | TRANSPORT MARC BELLEMARE INC | | | SCAC4 |
| 50 | TMBJ | TRANSPORTATION MANAGEMENT SOLUTIONS | | | SCAC4 |
| 51 | TMBK | T & M BROKERAGE INC | | | SCAC4 |
| 52 | TMBL | Tacoma Municipal Belt Line Ry. | 1/1975-7/2005 | | NAKINA |
| 53 | TMBL | Tacoma Municipal Belt Line Ry. | 1/75-7/2000 | | NRHS |
| 54 | TMBL | TACOMA MUNICIPAL BELT LINE RWY. | | | PWRC |
| 55 | TMBL | Tacoma Municipal Belt Line Railway | | | RSRV |
| 56 | TMBL | Tacoma Municipal Belt Line Railway | | USA | TRAFFIC |
| 57 | TMBM | THREE ONE SIX THREE SIX ZERO ONE | | | SCAC4 |
| 58 | TMBP | TIMBER SPECIALTIES CO | | | SCAC4 |
| 59 | TMBQ | TOURNAMENT BOATS INC | | | SCAC4 |
| 60 | TMBRNO | Technické muzeum Brno | | CZ | TRAFFIC |
| 61 | TMBS | TEAM SEATEC | | | SCAC4 |
| 62 | TMBT | TROMBETTO TRUCKING | | | SCAC4 |
| 63 | TMBU | TAMBOUR LTD. | | IL | BIC |
| 64 | TMBU | TAMBOUR LTD | | | SCAC4 |
| 65 | TMC | Tarmac Aviation Ltd. | Callsign: Tarmac, | GB | AVCODES |
| 66 | TMC | Travel Management Company Ltd. | Callsign: Trail Blaer, | USA | AVCODES |
| 67 | TMC | Temiscouata Ry. | 8/1920-1/1950 | | NAKINA |
| 68 | TMC | Temiscouata Ry. | Apr-38 | | NRHS |
| 69 | TMC | TEMISCOUATA RWY. | | | PWRC |
| 70 | TMC | Transportas Companhia de Macau | City: Macau | | TRAFFIC |
| 71 | TMCA | THOMAS, C A LLC | | | SCAC4 |
| 72 | TMCD | TMC | | | SCAC4 |
| 73 | TMCE | TRANS-MC | | | SCAC4 |
| 74 | TMCF | THREE M (3M) CANADA COMPANY | | | SCAC4 |
| 75 | TMCH | TRANSPORTES MINEROS DE COAHUILA SA | | | SCAC4 |
| 76 | TMCI | TRANSPORT MCV INC | | | SCAC4 |
| 77 | TMCJ | TOKYO MARINE CO LTD | | | SCAC4 |
| 78 | TMCK | TRANSPORTES MARVIN COUTINO RIOS | | | SCAC4 |
| 79 | TMCM | TRANSPORTADORA MEXICANA COMERCIAL S | | | SCAC4 |
| 80 | TMCN | TEXAS MOTOR CARRIER LLC | | | SCAC4 |
| 81 | TMCQ | THE MIDDLESEX CORPORATION | | | SCAC4 |
| 82 | TMCR | TRAMCOR CORPORATION | | | SCAC4 |
| 83 | TMCS | THOMPSON CARGO SPECIALISTS INC | | | SCAC4 |
| 84 | TMCT | TRANSPORT MICHEL COTE | | | SCAC4 |
| 85 | TMCU | TRANSMAR INTERNATIONAL SHIPPING COMPANY | | ET | BIC |
| 86 | TMCU | TRANSMAR SHIPPING COMPANY | | | SCAC4 |
| 87 | TMCV | TMCI INC | | | SCAC4 |
| 88 | TMCW | TRI ME CABINETS & MILLWORK LTD | | | SCAC4 |
| 89 | TMCX | The Mars Co. | 7/1937-1/1941 | | NAKINA |
| 90 | TMCX | The Maxson Corp. | added 7/1972; 1/1975; eliminated 1/1978 | | NAKINA |
| 91 | TMCX | Temco Corp. | added 10/1984; 1/1994; eliminated 10/1996 | | NAKINA |
| 92 | TMCX | The Mars Co. | Apr-38 | | NRHS |
| 93 | TMCX | The Maxson Corp. | 1/75; eliminated 1/78 | | NRHS |
| 94 | TMCX | Temco Corp. | added 10/84; 1/94; eliminated 10/96 | | NRHS |
| 95 | TMCX | *THE MARS CO. | | | PWRC |
| 96 | TMCX | *MAXON CORP. | | | PWRC |
| 97 | TMCX | *TEMCO CORPORATION | | | PWRC |
| 98 | TMD | Transmed Airlines | | ET | AVCODES |
| 99 | TMD | Transmandu C.A. | Callsign: Transmandu, | YV | AVCODES |
| 100 | TMD | Transmed Airlines | | | ICAO1 |
