| 7001 | TOB | Tobruk Air | IATA: 7T | | ICAO1 |
| 7002 | TOBB | TOP LINE SUPPLIES INC | | | SCAC4 |
| 7003 | TOBC | TOWNLINE PATTERNS | | | SCAC4 |
| 7004 | TOBG | TNT TRANSPORTATION BROKERAGE LLC | | | SCAC4 |
| 7005 | TOBI | TOBIN BROS MOVING & STORAGE | | | SCAC4 |
| 7006 | TOBN | TRANSPORTES BINACIONALES R A | | | SCAC4 |
| 7007 | TOBQ | TORRES, ROBERT INC | | | SCAC4 |
| 7008 | TOBS | TORONTO ZOO | | | SCAC4 |
| 7009 | TOBU | | | | TRAFFIC |
| 7010 | TOBV | THREE OCEANS TRANSPORT INC | | | SCAC4 |
| 7011 | TOBX | TTX COMPANY | | | SCAC4 |
| 7012 | TOBY | TOBY'S TRUCKING, INC | | | SCAC1 |
| 7013 | TOBY | TOWNLINE GROWERS INC | | | SCAC4 |
| 7014 | TOC | Aerotropical, S.A. de C.V. | Callsign: Tropicmex, | MEX | AVCODES |
| 7015 | TOC | Aerotropical | | | ICAO1 |
| 7016 | TOC | New York Central System | 10/1966 | | NAKINA |
| 7017 | TOC | Penn Central Transportation Co. | 4/1970-1/1975 | | NAKINA |
| 7018 | TOC | Penn Central Transportation Co., Robert W. Blanchette, Richard C. Bond and John H. McArthur, Trustees | eliminated 4/1976 | | NAKINA |
| 7019 | TOC | Consolidated Rail Corp. | added 4/1976; 1/1980; eliminated 1/1983; added 5/1983; eliminated 7/1999; 1/1994 | | NAKINA |
| 7020 | TOC | New York Central System | Oct-66 | | NRHS |
| 7021 | TOC | Penn Central Transportation Co. | 4/70-1/75 | | NRHS |
| 7022 | TOC | Penn Central Transportation Co., Robert W. Blanchette, Richard C. Bond and John H. McArthur, Trustees | eliminated 4/76 | | NRHS |
| 7023 | TOC | Consolidated Rail Corp. | added 4/76; 1/80; eliminated 1/83; added 5/83; eliminated 7/99; 1/94 | | NRHS |
| 7024 | TOC | CONSOLIDATED RAIL CORP. [PENN CENTRAL; NEW YORK CENTRAL; TOLEDO & OHIO CENTRAL RY] | | | PWRC |
| 7025 | TOC | Toledo & Ohio Central Railway (Conrail) | | | RSRV |
| 7026 | TOC | Toledo and Ohio Central Railway | | USA | TRAFFIC |
| 7027 | TOCA | TRANS OCEAN CARRIER INC | | | SCAC4 |
| 7028 | TOCB | TRANSPORTES CARBA SA DE CV | | | SCAC4 |
| 7029 | TOCC | TONAWANDA COKE CORP. | | | PWRC |
| 7030 | TOCC | TRANSOCEANIC CABLE SHIP COMPANY LLC | | | SCAC4 |
| 7031 | TOCD | TURNER OIL CO INC | | | SCAC4 |
| 7032 | TOCE | TOTAL OCEAN | | | SCAC1 |
| 7033 | TOCE | TOTAL OCEAN MARINE SERVICES INC | | | SCAC4 |
| 7034 | TOCG | TRANSPORTES DE CARGA GUTIERREZ | | | SCAC4 |
| 7035 | TOCH | TOWLE, CHARLES C | | | SCAC1 |
| 7036 | TOCHIO | Tochio Railway | | J | TRAFFIC |
| 7037 | TOCN | TWO SIX FOUR SIX-FIVE EIGHT FOUR NI | | | SCAC4 |
| 7038 | TOCP | TYLER OIL CO | | | SCAC4 |
| 7039 | TOCQ | TORRES CONTAINER CONNECTION | | | SCAC4 |
| 7040 | TOCS | TII LOGISTICS INC | | | SCAC4 |
| 7041 | TOCT | TOTEM OCEAN TRAILER EXPRESS INC | | | SCAC4 |
| 7042 | TOCV | THIEL OIL CO | | | SCAC4 |
| 7043 | TOCX | True's Oil Co. | 7/1935-1/1943; 1/1945 (not listed); 1/1946-10/1957; eliminated 7/1958 | | NAKINA |
| 7044 | TOCX | True's Oil Co. | 4/38-10/57; eliminated 7/58 | | NRHS |
| 7045 | TOCX | TRUE'S OIL CO. | | | PWRC |
| 7046 | TOCX | TTX COMPANY | | | SCAC4 |
| 7047 | TOCZ | TOCCA CASKET CO. | | | PWRC |
| 7048 | TODA | TOP OF TEXAS LOGISTICS INC | | | SCAC4 |
| 7049 | TODB | TOTAL DISTRIBUTION INC | | | SCAC4 |
| 7050 | TODC | TOTAL LOGISTICAL CONCEPTS LLC | | | SCAC4 |
| 7051 | TODD | TODD CHARTER SERVICE INC | | | SCAC4 |
| 7052 | TODF | TJM & CO | | | SCAC4 |
| 7053 | TODJ | TASSO EXPRESS LLC | | | SCAC4 |
| 7054 | TODL | TTS LLC | | | SCAC4 |
| 7055 | TODN | TODAY CARTAGE, INC | | | SCAC1 |
| 7056 | TODQ | TRANSPORT STEPHANE HUET INC | | | SCAC4 |
| 7057 | TODS | TODD-ELSTON OIL | | | SCAC4 |
| 7058 | TODU | TTS LLC | | | RSRV |
| 7059 | TODV | TRANSPORTES DEL COBRE | | | SCAC4 |
| 7060 | TODW | TRANSOCEAN DEEPWATER DRILLING INC | | | SCAC4 |
| 7061 | TODX | The David J. Joseph Co. | added 10/2008 | | NAKINA |
| 7062 | TODX | THE DAVID J. JOSEPH CO. | | | PWRC |
| 7063 | TODX | THE DAVID J JOSEPH COMPANY | | | SCAC4 |
| 7064 | TODY | TODCO | | | SCAC4 |
| 7065 | TOE | Texas, Oklahoma & Eastern R.R. Co. | 1/1975-7/2005 | | NAKINA |
| 7066 | TOE | Texas, Oklahoma & Eastern R.R. Co. | 1/75-7/2000 | | NRHS |
| 7067 | TOE | TEXAS, OKLAHOMA & EASTERN RAILROAD | | | PWRC |
| 7068 | TOE | Texas, Oklahoma and Eastern Railroad | | | RSRV |
| 7069 | TOE | Texas, Oklahoma and Eastern Railroad | | USA | TRAFFIC |
| 7070 | TOEA | TRANSPORTES EXTRA | | | SCAC4 |
| 7071 | TOEB | TST LOGISTICS INC | | | SCAC4 |
| 7072 | TOEC | TRANSPORTES ORION ESPECIALIZADOS SA | | | SCAC4 |
| 7073 | TOEI | Toei Subway | | J | TRAFFIC |
| 7074 | TOEJ | TRANS ORIENT EXPRESS INC | | | SCAC4 |
| 7075 | TOELN | Tölner GmbH | | DE | VKM |
| 7076 | TOEO | TWO ONE EIGHT SEVEN SIX ZERO ONE (2 | | | SCAC4 |
| 7077 | TOEQ | TURBO EXPRESS INC | | | SCAC4 |
| 7078 | TOES | TRANSPORTE ELIAS | | | SCAC4 |
| 7079 | TOET | TWO ONE EIGHT THREE THREE TWO FIVE | | | SCAC4 |
| 7080 | TOEU | TRANSOCEAN EQUIPMENT MANAGEMENT LLC | | USA | BIC |
| 7081 | TOEU | Transocean Equipment Management | | | RSRV |
| 7082 | TOEU | TRANSOCEAN EQUIPMENT MANAGEMENT LLC | | | SCAC4 |
| 7083 | TOEX | TTX COMPANY | | | SCAC4 |
| 7084 | TOF | Topcliffe FTU | Callsign: Topcliffe, | GB | AVCODES |
| 7085 | TOF | RAF Topcliffe Flying Training Unit | | | ICAO1 |
| 7086 | TOFB | TWO ONE FIVE TWO SEVEN TWO SEVEN (2 | | | SCAC4 |
| 7087 | TOFC | (TOFZ) TOFC INC DIVN OF FRUEHAUF | | | PWRC |
| 7088 | TOFC | TMO GLOBAL LOGISTICS LLC | | | SCAC4 |
| 7089 | TOFD | TWO ONE FOUR SEVEN THREE THREE FIVE | | | SCAC4 |
| 7090 | TOFG | TALENT TRANSPORT INC | | | SCAC4 |
| 7091 | TOFJ | TEN (10) G C LLC | | | SCAC4 |
| 7092 | TOFK | TRANSIT ONE FOUR (14) INC | | | SCAC4 |
| 7093 | TOFO | TROIANO FUEL OIL CO INC | | | SCAC4 |
| 7094 | TOFP | TRACTO REFRIGERADOS LOPEZ SA DE CV | | | SCAC4 |
| 7095 | TOFU | (TOFZ) TOFC INC DIVN OF FRUEHAUF | | | PWRC |
| 7096 | TOFU | TOFC Division of Fruehauf | | | RSRV |
| 7097 | TOFU | TOFC INC | | | SCAC4 |
| 7098 | TOFX | TTX COMPANY | | | SCAC4 |
| 7099 | TOFY | TWO ONE FIVE SEVEN ZERO NINE FIVE ( | | | SCAC4 |
| 7100 | TOFZ | (TOFZ) TOFC INC DIVN OF FRUEHAUF | | | PWRC |
