| 1 | KD | Kendell Airlines | ICAO: KDA, Callsign: Kendell, IATA Prefix: 678, Ceased operations | AUS | AVCODES |
| 2 | KD | British Island Airways Ltd. (BIA) | ICAO: BIA, Callsign: British Island, Ceased operations on 01 February 1990. | GB | AVCODES |
| 3 | KD | Air Entreprise | ICAO: AEN, Callsign: Enterprise, Designator KD recalled by IATA | F | AVCODES |
| 4 | KD | Abal Air | Callsign: Abalair, | S | AVCODES |
| 5 | KD | British Island Airways Ltd. (BIA) | ICAO: BIS, Callsign: Britisland, | GB | AVCODES |
| 6 | KD | Kaliningradavia Open Joint Sotck Company | ICAO: KNI, Callsign: Kaliningrad Air, Name changed to KD Avia Open Joint Stock Company | RUS | AVCODES |
| 7 | KD | KD Avia Open Joint Stock Company | ICAO: KNI, IATA Prefix: 093, Ceased Operations. Name changed from Kaliningradavia Open Joint Sotck Company | RUS | AVCODES |
| 8 | KD | Kal Star Aviation, PT. | ICAO: KLS, Callsign: Kalstar, Ceased operations on 30 November 2017. | RI | AVCODES |
| 9 | KD | Western Global Airlines, LLC | ICAO: WGN, Callsign: Western Global, Name changed to Western Global Airlines, Inc. Received Part 121 AOC on 04 August 2014. Affiliated to Finnish carrier, Nordic Globa Air. | USA | AVCODES |
| 10 | KD | Western Global Airlines, Inc. | ICAO: WGN, Callsign: Western Global, Name changed from Western Global Airlines, LLC. Received Part 121 AOC on 04 August 2014. Affiliated to Finnish carrier, Nordic Globa Air. | USA | AVCODES |
| 11 | KD | Koleje Dolnośląskie Spółka Akcyjna | | PL | VKM |
| 12 | KDA | Kendell Airlines | IATA: KD, Callsign: Kendell, IATA Prefix: 678, Ceased operations | AUS | AVCODES |
| 13 | KDA | Keuk Dong Dae | Callsign: Keuk Dong Dae, | ROK | AVCODES |
| 14 | KDA | Kendell Airlines | | | ICAO1 |
| 15 | KDA | Kendell Airlines | | AUS | TRAFFIC |
| 16 | KDAC | K-DAC ENTERPRISES INC | | | SCAC4 |
| 17 | KDAG | KING-DANFORTH AGENCY | | | SCAC3 |
| 18 | KDAI | KINDA IMPORT-EXPORT | | | SCAC4 |
| 19 | KDAK | KODIAK OILFIELD HAULERS INC | | | SCAC3 |
| 20 | KDAT | KENDALL TRUCKING | | | SCAC3 |
| 21 | KDAV | KING DAVID MOVERS INC | | | SCAC3 |
| 22 | KDAV | KUKER, DAVE TRUCKING | | | SCAC4 |
| 23 | KDBC | K D B SERVICES | | | SCAC4 |
| 24 | KDBL | KUSLER, DAVE BUSES LTD | | | SCAC3 |
| 25 | KDBT | KENNEY, D B TRANSPORT INC | | | SCAC4 |
| 26 | KDC | K.D. Air Corporation | IATA: XC, Callsign: Key Dee, Ceased operaitons. | CDN | AVCODES |
| 27 | KDC | K D Air Corporation | | | ICAO1 |
| 28 | KDCF | KALE, D C FARMS & TRUCKING | | | SCAC3 |
| 29 | KDCF | K & D TRANSPORT OF MARSEILLES INC | | | SCAC4 |
| 30 | KDCO | KRASH DELIVERY CO | | | SCAC3 |
| 31 | KDCR | KDC FARMS | | | SCAC4 |
| 32 | KDCS | KANIS, DIRK CONTRACTING LTD | | | SCAC4 |
| 33 | KDCU | KUKDONG MARITIME EQUIPMENT SERVICE | | ROK | BIC |
| 34 | KDCU | FAR EAST CONTAINER CO LTD | | | SCAC4 |
| 35 | KDCX | Eastman Chemical Co., Inc. | added 1/2004; 7/2005 | | NAKINA |
| 36 | KDCX | Eastman Chemical Canada, Inc. | added 1/1995; 7/2000; eliminated 1/2004 | | NAKINA |
| 37 | KDCX | Kodak Canada, Inc. | added 10/1990; 1/1994; eliminated 1/1995 | | NAKINA |
| 38 | KDCX | Kodak Canada, Inc. | added 10/90; 1/94; eliminated 1/95 | | NRHS |
| 39 | KDCX | Eastman Chemical Canada, Inc. | added 1/95; 7/2000 | | NRHS |
| 40 | KDCX | KODAK CANADA, INC. [EASTMAN CHEMICAL CANADA INC] | | | PWRC |
| 41 | KDCX | Eastman Chemical Canada | | | RSRV |
| 42 | KDCX | EASTMAN CHEMICAL COMPANY INC | | | SCAC4 |
| 43 | KDDI | KADDAC INC | | | SCAC3 |
| 44 | KDDI | KINNCO INCORPORATED | | | SCAC4 |
| 45 | KDDL | KINDRED, DONALD W | | | SCAC3 |
| 46 | KDDR | KIDDER TRANSPORTATION INC | | | SCAC4 |
| 47 | KDDS | KD DELIVERY SYSTEM | | | SCAC3 |
| 48 | KDDT | KIDD TRUCKING COMPANY | | | SCAC3 |
| 49 | KDDT | KENNEDY BROTHERS LOGISTICS LLC | | | SCAC4 |
| 50 | KDDT | KDD Trans | | PL | TRAFFIC |
| 51 | KDEI | KASINI HOUSE INCORPORATED | | | SCAC4 |
| 52 | KDEL | KENNYS DELIVERY | | | SCAC3 |
| 53 | KDET | KOTOPOULOS, DEMETRIOS EFTHIMIOS TRU | | | SCAC4 |
| 54 | KDEU | ABANG LOGISTICS CO., LTD. | | ROK | BIC |
| 55 | KDEX | GLNX Corp. | added 1/1996; eliminated 4/2000; 7/2000-7/2005 (not listed) | | NAKINA |
| 56 | KDEX | Jansen Rail Car, Inc. | added 4/1989; 1/1994; eliminated 1/1996 | | NAKINA |
| 57 | KDEX | Consolidated Transportation Corp. | eliminated 1/1989 | | NAKINA |
| 58 | KDEX | KDEX Leasing Co. | added 10/1986; eliminated 1/1988 | | NAKINA |
| 59 | KDEX | KDEX Leasing Co. | added 10/86; eliminated 1/88 | | NRHS |
| 60 | KDEX | Consolidated Transportation Corp. | eliminated 1/89 | | NRHS |
| 61 | KDEX | Jansen Rail Car, Inc. | added 4/89; 1/94; eliminated 1/96 | | NRHS |
| 62 | KDEX | GLNX Corp. | added 1/96; eliminated 4/2000; 7/2000 | | NRHS |
| 63 | KDEX | GLNX CORP. [JANSEN RAILCAR, INC.; CONSOLIDATED TRANSPORTATION CORP.; KDEX LEASING CO.] | | | PWRC |
| 64 | KDEX | KDEX Leasing (GLNX Corporation) | | | RSRV |
| 65 | KDEX | GLNX CORPORATION | | | SCAC4 |
| 66 | KDFR | K & D FREIGHT CO | | | SCAC4 |
| 67 | KDFS | KD FARM SERVICES | | | SCAC4 |
| 68 | KDGS | KENNEDY, DALE G & SONS WAREHOUSE IN | | | SCAC3 |
| 69 | KDGT | KURTZ, D G TRUCKING | | | SCAC4 |
| 70 | KDHS | K D H TRANSPORT SERVICES INC | | | SCAC4 |
| 71 | KDIA | KODIAK DISPATCH | | | SCAC3 |
| 72 | KDIB | KDI | | | SCAC3 |
| 73 | KDIC | KINGDOM DISTRIBUTORS INC | | | SCAC4 |
| 74 | KDIE | K-DOUBLE-I EXPRESS INC | | | SCAC3 |
| 75 | KDIK | KODIAK TRANSPORTATION LEASING | | | SCAC3 |
| 76 | KDIN | KADYL INC | | | SCAC4 |
| 77 | KDIS | K & D INDUSTRIAL SERVICES | | | SCAC3 |
| 78 | KDIS | K & D INDUSTRIAL SERVICES | | | SCAC4 |
| 79 | KDIT | K D I TRANSPORTATION INC | | | SCAC4 |
| 80 | KDIV | KRS DELIVERY INC | | | SCAC4 |
| 81 | KDJF | KIDD, JOHN F AND ASSOCIATES INC | | | SCAC3 |
| 82 | KDJF | KIDD, JOHN F AND ASSOCIATES INC | | | SCAC4 |
| 83 | KDJR | KIDD, JUDY ROWAN | | | SCAC4 |
| 84 | KDJS | KDJS INCORPORATED | | | SCAC4 |
| 85 | KDJT | KELLER, D J TRUCKING INC | | | SCAC3 |
| 86 | KDKD | K D K TRANSPORT | | | SCAC3 |
| 87 | KDLE | KENDALL EXPRESS INC | | | SCAC3 |
| 88 | KDLF | KRAUS, D LEE & COMPANY | | | SCAC3 |
| 89 | KDLH | KINGS DELIGHT LTD | | | SCAC4 |
| 90 | KDLK | KENDLE TRUCKING INC | | | SCAC3 |
| 91 | KDLK | KENDLE TRUCKING INC | | | SCAC4 |
| 92 | KDLN | KDL TRANSPORT INC | | | SCAC4 |
| 93 | KDLQ | KENDALL TRUCKING & GRADING | | | SCAC3 |
| 94 | KDLS | KLMT DELIVERY SERVICE INC | | | SCAC3 |
| 95 | KDLS | KRAUSE, DARYL & SHIRLEY | | | SCAC4 |
| 96 | KDLT | KANE DELIVERY LTD | | | SCAC3 |
| 97 | KDLT | K D L TRANSPORT | | | SCAC4 |
| 98 | KDLV | KEYSTONE DELIVERY SERVICE | | | SCAC3 |
| 99 | KDLX | Karl De Laittre Co. (General American Tank Car Corp.) | 8/1920 | | NAKINA |
| 100 | KDLX | KARL DE LAITTRE CO. (GENERAL AMERICAN TANK CAR CORP.) | | | PWRC |
