| 1 | ITL | Mikma Ltd. | Callsign: Mikma, | MD | AVCODES |
| 2 | ITL | American Inter-Island, Inc. | Callsign: Inter-Island, | USA | AVCODES |
| 3 | ITL | Italfly S.r.l. | Callsign: Italfly, | I | AVCODES |
| 4 | ITL | ITL Eisenbahngesellschaft mbH | Dresden (ITL = Import Transport Logistik) | D | privat-bahn.de |
| 5 | ITL | Import Tranport Logistik GmbH | | D | TRAFFIC |
| 6 | ITL | ITL Eisenbahngesellschaft mbH | | DE | VKM |
| 7 | ITLA | INTEL TRANSPORT SERVICE INC | | | SCAC4 |
| 8 | ITLB | ITL-Benelux | | NL | VKM |
| 9 | ITLD | IOWA TANKLINES INC | | | SCAC4 |
| 10 | ITLF | INTEGRITY TRANSPORTATION LLC | | | SCAC4 |
| 11 | ITLI | INTERNATIONAL TRANSPORT LINES | | | PWRC |
| 12 | ITLI | INTERLINK FREIGHT SYSTEMS (US), INC. | | | SCAC1 |
| 13 | ITLI | INTERNATIONAL TRANSPORT LOGISTICS I | | | SCAC4 |
| 14 | ITLJ | INTEGRATED TRANSPORT LOGISTICS INC | | | SCAC4 |
| 15 | ITLK | INTERLINK FREIGHT SYSTEMS, INC | | | SCAC1 |
| 16 | ITLM | INTERNATIONAL TRANSPORT LOGISTICS I | | | SCAC4 |
| 17 | ITLN | INTERLINE CORP. | | | SCAC1 |
| 18 | ITLN | INTERLINE CORPORATION | | | SCAC4 |
| 19 | ITLO | INTERNATIONAL TRUCKLOAD SERVICES | | | SCAC4 |
| 20 | ITLPL | ITL Polska Spólka z.o.o. | | PL | VKM |
| 21 | ITLU | SEACO SRL | | BDS | BIC |
| 22 | ITLU | ITEL CONTAINERS INTERNATIONAL CORPORATION | | | PWRC |
| 23 | ITLU | Itel Containers International Corporation (Seaco) | | | RSRV |
| 24 | ITLU | GENSTAR CONTAINER CORPORATION | | | SCAC4 |
| 25 | ITLV | IDAWEST TRANSPORT LLC | | | SCAC4 |
| 26 | ITLW | IWD TRANSPORTATION LLC | | | SCAC4 |
| 27 | ITLX | General Electric Rail Services Corp. | added 1/2000; 7/2000-7/2005 | | NAKINA |
| 28 | ITLX | General Electric Railcar Services Corp. | added 10/1992; 1/1994; eliminated 1/2000 | | NAKINA |
| 29 | ITLX | Itel Rail Corp. | eliminated 10/1992 | | NAKINA |
| 30 | ITLX | International Transport Co. | added 1/1974; 1/1975; eliminated 4/1979 | | NAKINA |
| 31 | ITLX | Drake Petroleum Co., operating Illinois Tank Line | 4/1938 | | NAKINA |
| 32 | ITLX | Illinois Tank Line (Drake Petroleum Co.) | 7/1937 | | NAKINA |
| 33 | ITLX | Illinois Tank Line | Apr-38 | | NRHS |
| 34 | ITLX | International Transport Co. | added 1/74; 1/75; eliminated 4/79 | | NRHS |
| 35 | ITLX | Itel Rail Corp. | eliminated 10/92 | | NRHS |
| 36 | ITLX | General Electric Railcar Services Corp. | added 10/92; 1/94; eliminated 1/2000 | | NRHS |
| 37 | ITLX | General Electric Rail Services Corp. | added 1/2000; 7/2000 | | NRHS |
| 38 | ITLX | *DRAKE PETROLEUM CO. (ILLINOIS TANK LINE) | | | PWRC |
| 39 | ITLX | +(NATX) GENERAL ELECTRIC RAILCAR SERVICES CORPORATION {ITEL RAIL CORP.] | | | PWRC |
| 40 | ITLX | GE Rail Services Corporation | | | RSRV |
| 41 | ITLX | GENERAL ELECTRIC RAILCAR SERVICES C | | | SCAC4 |
| 42 | ITLY | INTEGRITY TRANSPORTATION LLC | | | SCAC4 |
