| 1 | LD | AHK Air Hong Kong Limited | ICAO: AHK, Callsign: Air Hong Kong, IATA Prefix: 288, | HK | AVCODES |
| 2 | LD | Linea Turistica Aereotuy Lta, C.A. | ICAO: TUY, Callsign: Aereotuy, IATA designator changed to L4 | YV | AVCODES |
| 3 | LD | Lineas Aereas Del Estado (LADE) | ICAO: LDE, Callsign: Lade, Designator LD recalled by IATA | RA | AVCODES |
| 4 | LD | Landquart - Davos | | CH | TRAFFIC |
| 5 | LDA | Lauda Air Luftfahrt AG | IATA: NG, Callsign: Lauda Air, IATA Prefix: 231, Merged into Austrian Airlines. IATA Designator changed from LW | A | AVCODES |
| 6 | LDA | Lauda Air Luftfahrt AG | IATA: LW, Callsign: Lauda Air, IATA Designator changed to NG. IATA Designator changed from OE | A | AVCODES |
| 7 | LDA | Lauda Europe Ltd. | IATA: LW, Callsign: Beaufort, Ryanair Holdings Group | M | AVCODES |
| 8 | LDA | Lauda Air | IATA: NG | | ICAO1 |
| 9 | LDAA | LEE, DAVID ALAN | | | SCAC4 |
| 10 | LDAC | LANDAIR INTERNATIONAL INC | | | SCAC4 |
| 11 | LDAD | LAKELAND DELIVERY SERVICE INC | | | SCAC4 |
| 12 | LDAE | LAND/AIRE INC | | | SCAC3 |
| 13 | LDAG | LANDIS, D A TRUCKING INC | | | SCAC4 |
| 14 | LDAH | LOEW DEMERS AUCTIONS INC | | | SCAC4 |
| 15 | LDAK | LIL DANAS TRUCKING INC | | | SCAC3 |
| 16 | LDAL | LAND SEA AIR INCORPORATED | | | SCAC4 |
| 17 | LDAM | LEDA MARINE S A | | | SCAC3 |
| 18 | LDAO | LANDSTAR TRANSPORTATION SERVICE INC | | | SCAC3 |
| 19 | LDAO | LOADMASTERS | | | SCAC4 |
| 20 | LDAP | L & D TRANSPORT SERVICES LLC | | | SCAC4 |
| 21 | LDAQ | LINCOLN-DIXIE FREIGHT LINES, A L | | | SCAC3 |
| 22 | LDAR | LAND AND RAIL TRANSPORTATION INC | | | SCAC3 |
| 23 | LDAR | LES DISTRIBUTIONS A & R | | | SCAC4 |
| 24 | LDAS | L & D AERO SERVICE | | | SCAC3 |
| 25 | LDAS | LEKKER SEWING S DE RL DE | | | SCAC4 |
| 26 | LDAT | LAIRD, D A TRANSPORT INC | | | SCAC4 |
| 27 | LDAX | Louisiana Agricultural Finance Authority | 7/2000-7/2005 (not listed) | | NAKINA |
| 28 | LDAX | Louisiana Agricultural Finance Authority | Jul-00 | | NRHS |
| 29 | LDAX | LOUISIANA AGRICULTURAL FINANCE AUTHORITY | | | PWRC |
| 30 | LDAX | Louisiana Agricultural Finance Authority | | | RSRV |
| 31 | LDB | Lada Air Ltd. | Callsign: Lada, | BG | AVCODES |
| 32 | LDBD | L & D BAIT | | | SCAC4 |
| 33 | LDBE | LIMANKOY DENIZCILIK VE TICARET AS | | | SCAC4 |
| 34 | LDBG | L D BROKERAGE SERVICES | | | SCAC4 |
| 35 | LDBI | LANDSBERG, E INC | | | SCAC3 |
| 36 | LDBI | LSIDAHO INC | | | SCAC4 |
| 37 | LDBQ | LITTLE DEBRA FREIGHT LINES | | | SCAC3 |
| 38 | LDBR | LEDERBRAND, ROGER | | | SCAC3 |
| 39 | LDBS | LAMAR DISTRIBUTION SERVICE INC | | | SCAC3 |
| 40 | LDBT | LAND-BRIDGE TRANSPORTATION | | | SCAC3 |
| 41 | LDBY | LUNDERBY TRUCKING LLC | | | SCAC4 |
| 42 | LDC | LADECO Cargo, S.A. | IATA: UC, Callsign: Ladeco Cargo, IATA Prefix: 527, Designator UC recalled by IATA | RCH | AVCODES |
| 43 | LDC | Lausitzer Dampflok-Club e.V. | Neuendorf | D | privat-bahn.de |
| 44 | LDC | LASCO DEVELOPMENT CORP. | | | PWRC |
| 45 | LDC | Lausitzer Dampflok Club e.V | | DE | VKM |
| 46 | LDCA | LINE DRIVE OF CALIFORNIA | | | SCAC3 |
| 47 | LDCA | LOGISTICA DE CARGA DEL NOROESTE S A | | | SCAC4 |
| 48 | LDCC | LADSON CREATIVE MILLWORK | | | SCAC4 |
| 49 | LDCE | LEGEND CONTAINER LINE | | | SCAC4 |
| 50 | LDCF | LAUDIN, D C FARMS LTD | | | SCAC4 |
| 51 | LDCG | LIL DIESEL CARTAGE LTD | | | SCAC4 |
| 52 | LDCH | LOUIS DREYFUS COMMODITIES SUISSE SA | | | SCAC4 |
| 53 | LDCI | LEASEWAY DISTRIBUTION CENTERS INC | | | SCAC3 |
| 54 | LDCI | LITTLE DOLLHOUSE COMPANY, THE | | | SCAC4 |
| 55 | LDCK | L & D TRUCKING | | | SCAC3 |
| 56 | LDCK | LD LOGISTICS LLC | | | SCAC4 |
| 57 | LDCL | LAND DEVELOPMENT CONTRACTORS LLC | | | SCAC4 |
| 58 | LDCM | LEDCOR CMI INC | | | SCAC4 |
| 59 | LDCO | LAKESIDE DRAYAGE CO | | | SCAC3 |
| 60 | LDCP | LOUIS-DREYFUS CORPORATION | | | SCAC3 |
| 61 | LDCP | LOUIS DREYFUS ARMATEURS (S N C) | | | SCAC4 |
| 62 | LDCR | LAUDERDALE CARGO INC | | | SCAC3 |
| 63 | LDCV | LEADERSHIP COMPANIA NAVIERA SA | | | SCAC3 |
| 64 | LDCX | Louis Dreyfus Corp. | added 7/1979; 1/1980-7/2005 | | NAKINA |
| 65 | LDCX | Louis Dreyfus Corp. | added 7/79; 1/80-7/2000 | | NRHS |
| 66 | LDCX | LOUIS DREYFUS CORP. | | | PWRC |
| 67 | LDCX | Louis Dreyfus Corporation | | | RSRV |
| 68 | LDCX | LOUIS DREYFUS CORP. | | | SCAC4 |
| 69 | LDCZ | LOUIS DREYFUS CORP. | | | PWRC |
| 70 | LDDE | LDD EXPRESS INC | | | SCAC4 |
| 71 | LDDG | LOADDOG TRUCKING | | | SCAC4 |
| 72 | LDDK | LEHMAN, DARREL DUMP TRUCK SERVICES | | | SCAC4 |
| 73 | LDDP | LANDAIR TRANSPORT INC-DEDICATED DIV | | | SCAC4 |
| 74 | LDDQ | LUKOW, DON D | | | SCAC3 |
| 75 | LDDS | LLOYDS DELIVERY SERVICE | | | SCAC3 |
| 76 | LDDT | LADIES DELIGHT TRUCKING INC | | | SCAC3 |
| 77 | LDE | Lineas Aereas Del Estado (LADE) | IATA: 5U, Callsign: Lade, IATA Prefix: 022, | RA | AVCODES |
| 78 | LDE | Lineas Aereas Del Estado (LADE) | IATA: LD, Callsign: Lade, Designator LD recalled by IATA | RA | AVCODES |
| 79 | LDE | U.S. Forest Service | Callsign: Fire Lead, ICAO callsign changed to Fire Scan. | USA | AVCODES |
| 80 | LDE | U.S. Forest Service | Callsign: Fire Scan, ICAO designator changed to XCN. ICAO callsign changed from Fire Lead. | USA | AVCODES |
| 81 | LDE | LADE - Lineas Aereas Del Estado | | | ICAO1 |
| 82 | LDEA | LANDFORCE EXPRESS CORPORATION | | | SCAC4 |
| 83 | LDED | LINDBLAD EXPEDITIONS INC | | | SCAC4 |
| 84 | LDEG | LODESTAR LOGISTICS | | | SCAC4 |
| 85 | LDEI | L & D EXPRESS INC | | | SCAC3 |
| 86 | LDEL | LONDON EXPRESS LTD | | | SCAC3 |
| 87 | LDEM | L D E MOTOR EXPRESS | | | SCAC3 |
| 88 | LDEN | L & D ENTERPRISES INC | | | SCAC3 |
| 89 | LDEN | LYNDEN AIR FREIGHT INC | | | SCAC4 |
| 90 | LDEO | LAPTOP DEPOT | | | SCAC4 |
| 91 | LDEQ | LADUE TRUCKING CO | | | SCAC3 |
| 92 | LDER | LEADER COMPANY, THE | | | SCAC3 |
| 93 | LDER | LEADER TRANSPORT INC | | | SCAC4 |
| 94 | LDES | LOCAL DELIVERY SERVICE | | | SCAC3 |
| 95 | LDES | LES ENTREPRISES DESTIEN INC | | | SCAC4 |
| 96 | LDET | LEAUNART, DENNIS TRUCKING | | | SCAC3 |
| 97 | LDET | LEAUNART, DENNIS TRUCKING INC | | | SCAC4 |
| 98 | LDEV | LOGISTICS ONE TRANSPORT INC (DEDICA | | | SCAC4 |
| 99 | LDEV | | City: Düsseldorf | D | TRAFFIC |
| 100 | LDF | IRS Aero, Joint-Stock Air Company | IATA: 5R, Callsign: Elbrus, Designator 5R recalled by IATA | RUS | AVCODES |
