| 1 | IV | British Island Airways Ltd. (BIA) | ICAO: BIA, Callsign: Britisland, Ceased operations | GB | AVCODES |
| 2 | IV | Fujian Airlines | ICAO: CFJ, Callsign: Fujian, Designator IV reinstated by IATA | PRC | AVCODES |
| 3 | IV | Fujian Airlines | ICAO: CFJ, Callsign: Fujian, IATA designator IV recalled | PRC | AVCODES |
| 4 | IV | Van Gaever & Co. N.V. d/b/a VG Airlines | ICAO: FVG, Callsign: Nico, Name changed to Van Gaever & Co. N.V. d/b/a Delsey Airlines w.e.f. 28 August 2002. | B | AVCODES |
| 5 | IV | Van Gaever & Co. N.V. d/b/a Delsey Airlines | ICAO: FVG, Callsign: Nico, Declared bankrupt on 05 November 2002. Ceased operations on 06 November 2002. Name changed from Van Gaever & Co. N.V. d/b/a VG Airlines | B | AVCODES |
| 6 | IV | Wind Jet S.p.A. | ICAO: JET, Callsign: Ghibli, Ceased Operations in August 2012. Designator IV reinstated by IATA | I | AVCODES |
| 7 | IV | Caspian Airlines Service Company Ltd. | ICAO: CPN, Callsign: Caspian, Designator RV recalled by IATA | IR | AVCODES |
| 8 | IV | VVB Aviation Malta | ICAO: SGO, Callsign: Maiden, Name changed to Cardiff Aviation Malta Ltd. | M | AVCODES |
| 9 | IV | Cardiff Aviation Malta Ltd. | ICAO: SGO, Callsign: Maiden, Ceased operations in 2017. Name changed from VVB Aviation Malta | M | AVCODES |
| 10 | IV | GP Aviation E.o.o.d. | ICAO: GPX, Callsign: Ivory, | BG | AVCODES |
| 11 | IVA | Innotech Aviation Limited | Callsign: Innotech, | CDN | AVCODES |
| 12 | IVA | Innotech Aviation | | | ICAO1 |
| 13 | IVAC | IVACO ROLLING MILLS | | | SCAC4 |
| 14 | IVAN | IVAN TRANSPORTES | | | SCAC4 |
| 15 | IVAT | IVARRA, E TRUCKING | | | SCAC4 |
| 16 | IVAU | IVARAN LINES | | | SCAC1 |
| 17 | IVAU | IVARAN LINES | | | SCAC4 |
| 18 | IVB | Innsbrucker Verkehrsbetriebe | | AT | VKM |
| 19 | IVCA | IVOCLAR VIVADENT INC | | | SCAC4 |
| 20 | IVCL | INVERMERCE CARGO EXPRESS LLC | | | SCAC4 |
| 21 | IVCX | Invista S.A.R.L. | added 7/2006 | | NAKINA |
| 22 | IVCX | Impervious Varnish Co. | 8/1920-7/1932 | | NAKINA |
| 23 | IVCX | *IMPERVIOUS VARNISH CO. | | | PWRC |
| 24 | IVCX | +INVISTA S.A.R.L. | | | PWRC |
| 25 | IVCX | Invista S.A.R.L. | | | RSRV |
| 26 | IVCX | INVISTA S A R L | | | SCAC4 |
| 27 | IVDL | INNOVATIVE DRILLING LIMITED | | | SCAC4 |
| 28 | IVDS | IMLACH MOVERS INC (DIV ATLAS VAN LI | | | SCAC4 |
| 29 | IVE | Air Executive, S.L. | Callsign: Company Exec, | E | AVCODES |
| 30 | IVE | Air Executive | | | ICAO1 |
| 31 | IVE | IVECOS SPA | | IT | VKM |
| 32 | IVEC | INDUSTRIAL VACUUM EQUIPMENT CORP | | | SCAC4 |
| 33 | IVECO | Iveco | | I | TRAFFIC |
| 34 | IVEY | INTLOGIS SA DE CV | | | SCAC4 |
| 35 | IVFC | IMPERIAL VALLEY FOOD INC | | | SCAC4 |
| 36 | IVFD | INDIANA TRANSPORT S A DE C V | | | SCAC4 |
| 37 | IVFS | INNOVATIVE FREIGHT SOLUTIONS INC | | | SCAC4 |
| 38 | IVIE | I V I EXPRESS INC | | | SCAC4 |
| 39 | IVIN | INPAK VEHICLES INC | | | SCAC4 |
| 40 | IVJ | Flight International, Inc. | Callsign: Invader Jack, | USA | AVCODES |
| 41 | IVJ | Flight International | | | ICAO1 |
| 42 | IVK | Ing Vladimir Křiž | | CZ | VKM |
| 43 | IVKT | IVERSON, KELLY TRUCKING | | | SCAC4 |
| 44 | IVLC | INVIEW LOGISTICS LLC | | | SCAC4 |
| 45 | IVLD | INLET VISTA LTD | | | SCAC4 |
| 46 | IVLG | INNOVATIVE LOGISTICS LLC | | | SCAC4 |
| 47 | IVLI | INTERCONTINENTAL VAN LINES INCORPOR | | | SCAC4 |
| 48 | IVLL | INNOVATIVE LOGISTICS LLC | | | SCAC4 |
| 49 | IVLN | IMPERIAL VAN LINES INC | | | SCAC4 |
| 50 | IVLT | IRVING, J D LIMITED | | | SCAC4 |
| 51 | IVLU | HAPAG LLOYD A.G | | D | BIC |
| 52 | IVLU | IVARANS REDEREI A/S | | | PWRC |
| 53 | IVLU | Ivarans Rederei | | | RSRV |
| 54 | IVLV | IVARAN LINE | | | PWRC |
| 55 | IVLW | INNOVATIVE LOGISTICS LLC | | | SCAC4 |
| 56 | IVMC | IV&M INTERNATIONAL CORPORATION | | | SCAC4 |
| 57 | IVN | Ivan-Air | Callsign: Ivanair, | HR | AVCODES |
| 58 | IVN | Ivoirienne de Transports Aeriens (I.T.A.) | | CI | AVCODES |
| 59 | IVNE | INLAND VENTURES INC | | | SCAC4 |
| 60 | IVNK | IRVIN TRUCKING | | | SCAC4 |
| 61 | IVNT | IVANNA'S TRUCKING INC | | | SCAC4 |
| 62 | IVOX | Sco Tank Line, Inc. | 7/1937 (not listed) | | NAKINA |
| 63 | IVOX | The International Vegetable Oil Co., Inc. | 7/1930-7/1935 | | NAKINA |
| 64 | IVOX | The International Vegetable Oil Co. | 8/1920-7/1923 | | NAKINA |
| 65 | IVOX | *INTERNATIONAL VEGETABLE OIL CO. | | | PWRC |
| 66 | IVOX | *SCO TANK LINE, INC. | | | PWRC |
| 67 | IVP | Imatran Veturipalvelu Oy | | FI | VKM |
| 68 | IVPT | IV PETROLEUM TRANSPORTS INC | | | SCAC4 |
| 69 | IVR | Burundaiavia | Callsign: Rurun, | KZ | AVCODES |
| 70 | IVR | Burundaiavia | | | ICAO1 |
| 71 | IVRH | IVER SHIPS B V | | | SCAC4 |
| 72 | IVRS | IVER SHIPS | | | SCAC4 |
| 73 | IVS | I.A.S. (Ivoire Aero Services) | Callsign: Ivoire Aero, | CI | AVCODES |
| 74 | IVS | Ivoire Aero Services | | | ICAO1 |
| 75 | IVS | ISLE VISTA CASINO | | | SCAC4 |
| 76 | IVSI | ISLAND VIEW SHIPPING INTERNATIONAL | | | SCAC4 |
| 77 | IVT | Interaviatrans Ltd. | Callsign: Interavia, Ceased operations. | UA | AVCODES |
| 78 | IVT | Interaviatrans | | | ICAO1 |
| 79 | IVTB | INDIAN VALLEY TRUCKING INC | | | SCAC4 |
| 80 | IVTI | IVT INC | | | SCAC4 |
| 81 | IVTL | INNOVATIVE TRANSPORT SOLUTIONS LLC | | | SCAC4 |
| 82 | IVTU | INVICONT OU | | EST | BIC |
| 83 | IVTV | INNOVATIVE TRANSPORTATION SERVICES | | | SCAC4 |
| 84 | IVVE | IVVE TRANSPORTATION | | | SCAC4 |
| 85 | IVW | Ivoire Airways | IATA: XV, Callsign: Ivoireairways, IATA deignator changed to XV | CI | AVCODES |
| 86 | IVW | Ivoire Airways | IATA: XV, Callsign: Ivoireairways, IATA Prefix: 351, IATA deignator changed to XV* | CI | AVCODES |
| 87 | IVW | Ivoire Airways | | | ICAO1 |
| 88 | IVXE | IRVIN TRANSPORTATION SERVICES | | | SCAC4 |
| 89 | IVZ | Interessenverband Zittauer Schmalspurbahnen e.V. | Zittau | D | privat-bahn.de |
