| 1 | IM | Australia Asia Airlines Limited | ICAO: AAU, Callsign: Austasia, Subsidary of Qantas. Ceased operations during 1996. | AUS | AVCODES |
| 2 | IM | JSC Aircompany ATMA | ICAO: AMA, Callsign: Adik, IATA Prefix: 707, Name changed to Jupiter Jet Airlines LLP. Founded on 26 September 1996. | KZ | AVCODES |
| 3 | IM | Michelin Air Services | ICAO: BIB, | F | AVCODES |
| 4 | IM | Intensive Air (Pty) Ltd. | ICAO: XRA, Callsign: Intensive, Ceased opertions on 09 April 2002. Designator IM* reinstated by IATA | ZA | AVCODES |
| 5 | IM | Carib Express | | AG | AVCODES |
| 6 | IM | Invicta Airways Ltd. | Name changed to Invicta International Airlines Ltd. | GB | AVCODES |
| 7 | IM | Invicta International Airlines Ltd. | Name changed from Invicta Airways Ltd. | GB | AVCODES |
| 8 | IM | Menajet | ICAO: MNJ, Callsign: Menajet, Desigantor IM restated by IATA | UAE | AVCODES |
| 9 | IM | Airday Srl | ICAO: IAD, Callsign: Airday, Name changed to Fly Wez Srl. IATA designator changed from 7S | I | AVCODES |
| 10 | IM | Fly Wex Srl | ICAO: IAD, Callsign: Flywex, Desigantor IM* recalled by IATA. Name changed from Airday Srl | I | AVCODES |
| 11 | IM | Mint Lineas Aereas, S.L. | ICAO: MIC, Callsign: Mint Airways, Founded in 2009. Ceased operations on 22 May 2012. | E | AVCODES |
| 12 | IM | Jupiter Jet Airlines LLP | ICAO: AMA, Callsign: Adik, IATA Prefix: 707, Name changed from JSC Aircompany ATMA. Founded on 26 September 1996. | KZ | AVCODES |
| 13 | IM | Aircompany Jupiter Jet LLP | ICAO: JPJ, Callsign: Jupiterjet, IATA Prefix: 707, | KZ | AVCODES |
| 14 | IMA | Inter-Mountain Airways | Callsign: Inter-Mountain, | USA | AVCODES |
| 15 | IMA | Inter-Mountain Airways | | | ICAO1 |
| 16 | IMAC | INTERNATIONAL MANAGEMENT ASSISTANCE | | | SCAC4 |
| 17 | IMAF | IM.A.F. Costruzioni | | I | TRAFFIC |
| 18 | IMAI | INFINITY MARINE | | | SCAC4 |
| 19 | IMAK | IRELAN, MARK TRUCKING LLC | | | SCAC4 |
| 20 | IMAM | IMA MANAGEMENT INC | | | SCAC4 |
| 21 | IMAP | I M T C | | | SCAC4 |
| 22 | IMAT | INDIANA MATERIAL TRANSFER INC | | | SCAC4 |
| 23 | IMAY | INTERNATIONAL MAYFLOWER | | | SCAC4 |
| 24 | IMAZ | IMC AGRICO | | | PWRC |
| 25 | IMBC | Louis IMBERT & Cie | | FR | VKM |
| 26 | IMBG | INTER MOUNTAIN BUILDING SUPPLY INC | | | SCAC4 |
| 27 | IMBJ | Wagons Citernes Joseph IMBERT | | FR | VKM |
| 28 | IMBK | INTERMOUNTAIN BROKERAGE | | | SCAC4 |
| 29 | IMBM | I M X | | | SCAC4 |
| 30 | IMBU | OОО «AIR LIQUIDE» | | RUS | BIC |
| 31 | IMBU | Imbusch Geratevermletung und Dienstleistung GmbH | | DE | VKM |
| 32 | IMC | M/S IAMC (Pvt) Ltd. | Callsign: My Charter, Founded on 04 September 2012. | PK | AVCODES |
| 33 | IMC | INTERNATIONAL MINING CORP. | | | PWRC |
| 34 | IMCA | INTERMODAL CARIBBEAN EXPRESS | | | SCAC1 |
| 35 | IMCA | ICE INTERNATIONAL INC | | | SCAC4 |
| 36 | IMCB | I M C SHIPPING CO PTE LTD | | | SCAC4 |
| 37 | IMCC | INTERNATIONAL MINERALS & CHEMICAL CO. | | | PWRC |
| 38 | IMCC | INTERMODAL CONTAINER CARRIER INC | | | SCAC4 |
| 39 | IMCD | I C E MARKETING AND CONSULTING LTD | | | SCAC4 |
| 40 | IMCE | INTERMODAL CONTAINER CORPORATION | | | SCAC4 |
| 41 | IMCF | INSPIRE MOTORSPORTS CORP | | | SCAC4 |
| 42 | IMCG | INTERMODAL CARTAGE CO INC | | | SCAC4 |
| 43 | IMCH | INDIAN MOTORCYCLE COMPANY | | | SCAC4 |
| 44 | IMCI | IMC INC | | | SCAC4 |
| 45 | IMCK | IMEX MODEL COMPANY INC | | | SCAC4 |
| 46 | IMCN | ISLANDS MECHANICAL CONTRACTOR INC | | | SCAC4 |
| 47 | IMCO | IMPERIAL CUP CORPORATION | | | SCAC4 |
| 48 | IMCQ | IMFINE INC | | | SCAC4 |
| 49 | IMCS | INTERMODAL CONTAINER SERVICES LLC | | | SCAC4 |
| 50 | IMCT | ICONIC MOTOR CARRIERS | | | SCAC4 |
| 51 | IMCU | Industrial Maritime Carriers | | | RSRV |
| 52 | IMCU | INDUSTRIAL MARITIME CARRIERS INC | | | SCAC4 |
| 53 | IMCV | INTERMODAL CARTAGE CO INC (VAN DIVI | | | SCAC4 |
| 54 | IMCW | IKARIA MARITIME CORPORATION | | | SCAC4 |
| 55 | IMCX | The Mosaic Co. | added 1/2006 | | NAKINA |
| 56 | IMCX | IMC Global Operations, Inc. | added 1/1995; 7/2000-7/2005; eliminated 1/2006 | | NAKINA |
| 57 | IMCX | IMC Fertilizer, Inc. | added 4/1988; 1/1994; eliminated 1/1995 | | NAKINA |
| 58 | IMCX | International Minerals & Chemical Corp. | added 4/1967; 4/1970-1/1980; eliminated 4/1988 | | NAKINA |
| 59 | IMCX | Merchants Despatch Transportation Corp. | added 4/1962; eliminated 7/1962 | | NAKINA |
| 60 | IMCX | Merchants Despatch Transportation Corp. | added 4/62 | | NRHS |
| 61 | IMCX | International Minerals & Chemical Corp. | added 4/67; 4/70-1/80; eliminated 4/88 | | NRHS |
| 62 | IMCX | IMC Fertilizer, Inc. | added 4/88; 1/94; eliminated 1/95 | | NRHS |
| 63 | IMCX | IMC Global Operations, Inc. | added 1/95; 7/2000 | | NRHS |
| 64 | IMCX | *MERCHANTS DESPATCH TRANSPORTATION CORP. | | | PWRC |
| 65 | IMCX | +MOSAIC CO. [IMC GLOBAL OPERATIONS, INC.; IMC FERTILIZER, INC.; INTERNATIONAL MINERALS & CHEMICAL CO.] | | | PWRC |
| 66 | IMCX | International Minerals and Chemical Corporation (IMC Global Operations) | | | RSRV |
| 67 | IMCX | MOSAIC COMPANY, THE | | | SCAC4 |
| 68 | IMCX | IMC Global Operations, Inc. | | USA | TRAFFIC |
| 69 | IMCY | INTERNATIONAL MACHINERY SALES INC | | | SCAC4 |
| 70 | IMCZ | IMC INDUSTRIES | | | PWRC |
| 71 | IMD | IMD Airways, S.L. | Callsign: Jetbull, | E | AVCODES |
| 72 | IMDA | INFLIGHT MEDICAL SERVICES INTERNATI | | | SCAC4 |
| 73 | IMDC | INTERMODAL CONTAINER LOGISTICS | | | SCAC4 |
| 74 | IMDL | INTERMODAL TRANSPORT INC | | | SCAC4 |
| 75 | IMDQ | INTERSTATE MEAT DISTRIBUTORS INC | | | SCAC4 |
| 76 | IMDR | INDUSTRIAS MAQUILADORA DE CABORCA S | | | SCAC4 |
| 77 | IMDU | MEDICAIR INDUSTRY S.R.L. | | I | BIC |
| 78 | IMDU | Seateq Corporation | | | RSRV |
| 79 | IMDU | SEATEQ INC | | | SCAC4 |
| 80 | IME | Airtime Charters | Callsign: Airtime, ICAO Designator cancelled. | GB | AVCODES |
| 81 | IME | Airtime Charters | | | ICAO1 |
| 82 | IMEC | INTERMAX EXPRESS CANADA INC | | | SCAC4 |
| 83 | IMEE | IMPERIAL EAGLE EXPEDITE INC | | | SCAC4 |
| 84 | IMEG | ITS MESSENGERS | | | SCAC4 |
| 85 | IMEI | ISO MOVED EASY TRANSPORT INC | | | SCAC4 |
| 86 | IMEJ | IMETCO | | | SCAC4 |
| 87 | IMEO | INTERMODAL MEXICO | | | SCAC4 |
| 88 | IMEQ | INDUSTRIAL METALS RECYCLING CORP | | | SCAC4 |
| 89 | IMES | IMPERIAL EXPRESS INC | | | SCAC4 |
| 90 | IMEU | EJERCITO DE TIERRA - MINISTERO DE DEFENS | | E | BIC |
| 91 | IMEU | EJERCITO DE TIERRA-MINISTERO DE DEF | | | SCAC4 |
| 92 | IMEX | Indiana & Michigan Electric Co. | 1/1943-4/1961; eliminated 10/1962; added 10/1970; 1/1975-7/2005 | | NAKINA |
| 93 | IMEX | Indiana & Michigan Electric Co. | 1/52-4/61; added 10/70; 1/75-7/2000 | | NRHS |
| 94 | IMEX | INDIANA & MICHIGAN ELECTRIC CO. | | | PWRC |
| 95 | IMEX | Indiana and Michigan Electric | | | RSRV |
| 96 | IMEX | INDIANA & MICHIGAN ELECTRIC CO. | | | SCAC4 |
| 97 | IMFD | IMAR FIDELITY ENTERPRISES | | | SCAC4 |
| 98 | IMFI | INTER-METRO FREIGHT INC | | | SCAC4 |
| 99 | IMFO | INTERLINE MOTOR FREIGHT ONTARIO INC | | | SCAC4 |
| 100 | IMFQ | IHUNT MOTOR FREIGHT INC | | | SCAC4 |
