| 1 | KE | Korean Air Lines Co. Ltd. | ICAO: KAL, Callsign: Koreanair, IATA Prefix: 180, Name changed to Korean Air w.e.f. 20 June 1984. | ROK | AVCODES |
| 2 | KE | Korean Air | ICAO: KAL, Callsign: Koreanair, IATA Prefix: 180, Name changed from Korean Air Lines Co. Ltd. w.e.f. 20 June 1984. | ROK | AVCODES |
| 3 | KE | Kansas Eastern R.R. Inc. | 7/2000-7/2005 | | NAKINA |
| 4 | KE | Kansas Eastern R.R. Inc. | Jul-00 | | NRHS |
| 5 | KE | KANSAS EASTERN RAILROAD | | | PWRC |
| 6 | KE | Kansas Eastern Railroad | | | RSRV |
| 7 | KE | KANSAS EASTERN RAILROAD INC | | | SCAC4 |
| 8 | KE | Kemming, Wilhelm e. Kfm. | | DE | VKM |
| 9 | KEA | Korea Express Air Co., Ltd. | IATA: XE, Callsign: Korea Express, IATA designator changed to KW. | ROK | AVCODES |
| 10 | KEA | Kalahari Express Airlines (pty) Ltd. | IATA: XY, Callsign: Kalhari, Designator XY recalled by IATA | NAM | AVCODES |
| 11 | KEA | Korea Express Air Co., Ltd. | IATA: KW, Callsign: Korea Express, IATA designator changed from XE*. Commenced opeations on 15 August 2009. | ROK | AVCODES |
| 12 | KEAA | KEA, ALBERT J TRUCKING | | | SCAC3 |
| 13 | KEAB | KELLY EXPRESS & LOGISTICS LLC | | | SCAC4 |
| 14 | KEAD | KEAR, DENNIS TRUCKING | | | SCAC3 |
| 15 | KEAE | KESSEL, A E CO INC | | | SCAC3 |
| 16 | KEAH | KEY SAFETY SYSTEMS DE MEXICO S DE R | | | SCAC4 |
| 17 | KEAI | KEATON TRUCK LINES INC | | | SCAC3 |
| 18 | KEAK | KERNS FARMS CORP | | | SCAC4 |
| 19 | KEAL | KEAL DRIVEAWAY COMPANY | | | SCAC3 |
| 20 | KEAL | KEALOHALANI EQUIPMENT AND RENTAL IN | | | SCAC4 |
| 21 | KEAM | KENNEDY, A M TRANSPORTATION CO INC | | | SCAC3 |
| 22 | KEAN | KEARNEYS INC | | | SCAC3 |
| 23 | KEAN | KANE, KEN AERIAL SPRAY (1988) LTD | | | SCAC4 |
| 24 | KEAQ | KEA MARITIME CORPORATION | | | SCAC3 |
| 25 | KEAR | KEARNEY, L G JR | | | SCAC3 |
| 26 | KEAR | KEARNEY PLANTERS | | | SCAC4 |
| 27 | KEAT | KEATHLEY, T A JR | | | SCAC3 |
| 28 | KEAY | KEARNEY TRUCKING | | | SCAC3 |
| 29 | KEAY | KEATS TRANSPORTATION LLC | | | SCAC4 |
| 30 | KEB | London Country South-East: Kentish Bus | LCSE was largely based around Dartford and Gravesend, with a rural element hanging on around the Darent Valley and Sevenoaks | GB | TRAFFIC |
| 31 | KEBC | KEEBLER COMPANY (A DELAWARE CORPORA | | | SCAC3 |
| 32 | KEBD | K E B DELIVERY SERVICE INC | | | SCAC3 |
| 33 | KEBD | K E B DELIVERY SERVICE INC | | | SCAC4 |
| 34 | KEBFI | VEB Kraftverkehr Eberswalde-Finow | | DDR | TRAFFIC |
| 35 | KEBI | KEN-EL BROKERAGE INC | | | SCAC3 |
| 36 | KEBK | KENNEBECK | | | SCAC4 |
| 37 | KEBN | KENNEDY, BEN TRUCKING COMPANY | | | SCAC3 |
| 38 | KEBO | KELDER, PETER C CARTAGE SERVICE | | | SCAC3 |
| 39 | KEBS | KEBO TRANSPORTATION SERVICES INC | | | SCAC3 |
| 40 | KEBX | Ronald L. Boothman Remainder Trust | added 4/1984; 1/1994-7/2005; eliminated 4/2008; eliminated 7/2008 | | NAKINA |
| 41 | KEBX | Manufacturers Leasing Corp. | added 4/1962; 7/1965-1/1980; eliminated 4/1984 | | NAKINA |
| 42 | KEBX | Ronald L. Boothman Remainder Trust | added 4/84; 1/94-7/2000 | | NRHS |
| 43 | KEBX | Manufacturers Leasing Corp. | added 4/62; 7/65-1/80; eliminated 4/84 | | NRHS |
| 44 | KEBX | *MANUFACTURERS LEASING CORP. | | | PWRC |
| 45 | KEBX | +RONALD L. BOOTHMAN REMAINDER TRUST [KOPPERS CO. - LESSEE] | | | PWRC |
| 46 | KEBX | Ronald L. Boothman Remainder Trust | | | RSRV |
| 47 | KECA | KENNECOTT EXPLORATION COMPANY | | | SCAC4 |
| 48 | KECB | KIPO EXPRESS CORP | | | SCAC4 |
| 49 | KECC | KELLY, JOHN A CARTAGE CO | | | SCAC3 |
| 50 | KECG | KEYYEY CARGO SYSTEM | | | SCAC3 |
| 51 | KECH | KETCHUM TRUCKING COMPANY | | | SCAC3 |
| 52 | KECI | KEENE CARRIERS INC | | | SCAC3 |
| 53 | KECM | KEENAN TRANSIT CO | | | SCAC3 |
| 54 | KECN | KENCO INC | | | SCAC3 |
| 55 | KECO | KINGS EXPRESS CORP | | | SCAC3 |
| 56 | KECP | KESS CORP | | | SCAC3 |
| 57 | KECQ | KENOSHA CARTAGE | | | SCAC3 |
| 58 | KECQ | KENCO LOGISTIC SERVICES | | | SCAC4 |
| 59 | KECR | KETCHER TRUCKING | | | SCAC3 |
| 60 | KECS | KEENER, C S TRUCKING | | | SCAC3 |
| 61 | KECS | Kecskeméti kisvasút | | H | TRAFFIC |
| 62 | KECT | KETTLE CREEK TRANSPORTATION | | | SCAC3 |
| 63 | KECU | ECO TRADING & SERVICE | | | SCAC4 |
| 64 | KECX | Kuner-Empson Co. | 7/1937-7/1954; eliminated 10/1956 | | NAKINA |
| 65 | KECX | Kuner-Empson Co. | 4/38-1/52 | | NRHS |
| 66 | KECX | *KUNER-EMPSON CO. | | | PWRC |
| 67 | KECX | *KELLOGG COMPANY | | | PWRC |
| 68 | KEDD | KEDMA LTD. | | | SCAC3 |
| 69 | KEDH | KEDASHAW INC | | | SCAC3 |
| 70 | KEDI | KENNEYS DELIVERY | | | SCAC3 |
| 71 | KEDK | KENDRICK TRUCKING CORP | | | SCAC3 |
| 72 | KEDL | KENDALL TRUCKING | | | SCAC3 |
| 73 | KEDL | KENDALL TRUCKING | | | SCAC4 |
| 74 | KEDM | KEDNEY MOVING & STORAGE INC | | | SCAC3 |
| 75 | KEDO | KENS EXPRESS | | | SCAC3 |
| 76 | KEDR | KEDROWSKI, M J TRUCKING | | | SCAC3 |
| 77 | KEDT | KENNEDY TRANSPORT | | | SCAC3 |
| 78 | KEDW | KELLY, DAN WAREHOUSE INC | | | SCAC3 |
| 79 | KEE | Keystone Air Service | IATA: BZ, Callsign: Keystone, Designator BZ recalled by IATA | CDN | AVCODES |
| 80 | KEE | Keystone Air Service | Callsign: Keystone, Designator BZ recalled by IATA | CDN | AVCODES |
| 81 | KEE | Keystone Air Services | IATA: BZ | | ICAO1 |
| 82 | KEEB | KEENAN BROS INC | | | SCAC3 |
| 83 | KEEB | KEENER, BRUCE A TRUCKING INC | | | SCAC4 |
| 84 | KEEC | K & E ENTERPRISES LLC | | | SCAC4 |
| 85 | KEED | KEENFREIGHT | | | SCAC4 |
| 86 | KEEE | KEENEY TRUCK LINES INC | | | SCAC3 |
| 87 | KEEE | KEENEY TRUCK LINES INC | | | SCAC4 |
| 88 | KEEG | KEESLER TRANSPORT | | | SCAC4 |
| 89 | KEEI | KENEARL INC | | | SCAC3 |
| 90 | KEEI | KEELAN TRANSPORT INC | | | SCAC4 |
| 91 | KEEL | KEENER, LONNIE H | | | SCAC3 |
| 92 | KEEL | KEELER, JIM ENTERPRISES INC | | | SCAC4 |
| 93 | KEEM | K & E ENTERPRISES OF SALEM LLC | | | SCAC4 |
| 94 | KEEN | KEENES TRANSFER | | | SCAC3 |
| 95 | KEEN | KEENES TRANSFER | | | SCAC4 |
| 96 | KEEQ | KNEE, RONALD | | | SCAC3 |
| 97 | KEER | KEELER, FRANK | | | SCAC3 |
| 98 | KEER | KEETER ENTERPRISES LLC | | | SCAC4 |
| 99 | KEES | KEESHIN TRANSPORTATION SYS INC | | | PWRC |
| 100 | KEET | KEEN TRANSPORT INC | | | SCAC3 |
