| 1701 | LDCX | Louis Dreyfus Corporation | | | RSRV |
| 1702 | LDCX | LOUIS DREYFUS CORP. | | | SCAC4 |
| 1703 | LDCZ | LOUIS DREYFUS CORP. | | | PWRC |
| 1704 | LDDE | LDD EXPRESS INC | | | SCAC4 |
| 1705 | LDDG | LOADDOG TRUCKING | | | SCAC4 |
| 1706 | LDDK | LEHMAN, DARREL DUMP TRUCK SERVICES | | | SCAC4 |
| 1707 | LDDP | LANDAIR TRANSPORT INC-DEDICATED DIV | | | SCAC4 |
| 1708 | LDDQ | LUKOW, DON D | | | SCAC3 |
| 1709 | LDDS | LLOYDS DELIVERY SERVICE | | | SCAC3 |
| 1710 | LDDT | LADIES DELIGHT TRUCKING INC | | | SCAC3 |
| 1711 | LDE | Lineas Aereas Del Estado (LADE) | IATA: 5U, Callsign: Lade, IATA Prefix: 022, | RA | AVCODES |
| 1712 | LDE | Lineas Aereas Del Estado (LADE) | IATA: LD, Callsign: Lade, Designator LD recalled by IATA | RA | AVCODES |
| 1713 | LDE | U.S. Forest Service | Callsign: Fire Lead, ICAO callsign changed to Fire Scan. | USA | AVCODES |
| 1714 | LDE | U.S. Forest Service | Callsign: Fire Scan, ICAO designator changed to XCN. ICAO callsign changed from Fire Lead. | USA | AVCODES |
| 1715 | LDE | LADE - Lineas Aereas Del Estado | | | ICAO1 |
| 1716 | LDEA | LANDFORCE EXPRESS CORPORATION | | | SCAC4 |
| 1717 | LDED | LINDBLAD EXPEDITIONS INC | | | SCAC4 |
| 1718 | LDEG | LODESTAR LOGISTICS | | | SCAC4 |
| 1719 | LDEI | L & D EXPRESS INC | | | SCAC3 |
| 1720 | LDEL | LONDON EXPRESS LTD | | | SCAC3 |
| 1721 | LDEM | L D E MOTOR EXPRESS | | | SCAC3 |
| 1722 | LDEN | L & D ENTERPRISES INC | | | SCAC3 |
| 1723 | LDEN | LYNDEN AIR FREIGHT INC | | | SCAC4 |
| 1724 | LDEO | LAPTOP DEPOT | | | SCAC4 |
| 1725 | LDEQ | LADUE TRUCKING CO | | | SCAC3 |
| 1726 | LDER | LEADER COMPANY, THE | | | SCAC3 |
| 1727 | LDER | LEADER TRANSPORT INC | | | SCAC4 |
| 1728 | LDES | LOCAL DELIVERY SERVICE | | | SCAC3 |
| 1729 | LDES | LES ENTREPRISES DESTIEN INC | | | SCAC4 |
| 1730 | LDET | LEAUNART, DENNIS TRUCKING | | | SCAC3 |
| 1731 | LDET | LEAUNART, DENNIS TRUCKING INC | | | SCAC4 |
| 1732 | LDEV | LOGISTICS ONE TRANSPORT INC (DEDICA | | | SCAC4 |
| 1733 | LDEV | | City: Düsseldorf | D | TRAFFIC |
| 1734 | LDF | IRS Aero, Joint-Stock Air Company | IATA: 5R, Callsign: Elbrus, Designator 5R recalled by IATA | RUS | AVCODES |
| 1735 | LDFG | LANDFREIGHT TRANSPORT INC | | | SCAC3 |
| 1736 | LDFM | L D F MOBILE HOME TRANSPORT | | | SCAC3 |
| 1737 | LDFQ | LEDFORD, D W | | | SCAC3 |
| 1738 | LDFT | LEDFORD TRUCKING INC | | | SCAC3 |
| 1739 | LDFT | LAND OFROST INC | | | SCAC4 |
| 1740 | LDG | Aerolineas Aereas Ejecutivas de Durango, S.A. de C.V. | Callsign: Durango, | MEX | AVCODES |
| 1741 | LDG | Leading Edge Aviation Ltd. | Callsign: Edge, | GB | AVCODES |
| 1742 | LDG | Aerolineas Aereas Ejecutivas De Durango | | | ICAO1 |
| 1743 | LDGC | LANDGISTICS INC | | | SCAC4 |
| 1744 | LDGK | LUDINGTON TRUCKING | | | SCAC4 |
| 1745 | LDGL | LEADING EDGE LOGISTICS LLC | | | SCAC4 |
| 1746 | LDGM | LOMAR DEUTSCHLAND GMBH | | | SCAC4 |
| 1747 | LDGN | LINDGREN, LAWRENCE | | | SCAC3 |
| 1748 | LDGP | LASCARIS DESIGN GROUP INTL | | | SCAC3 |
| 1749 | LDGQ | LOAD GO TRANSPORT INC | | | SCAC4 |
| 1750 | LDGS | LINDE GAS LLC | | | SCAC4 |
| 1751 | LDH | Load-Haul | Load-Haul was a railfreight operator based in the North-East of the United Kingdom. It was formed in 1994 prior to the privatisation of British Rail.Originally,Load-Haul was known by BR as Train Load Freight-North(TLF-North) The company introduced a bold livery of black with orange lower cabsides.This livery was first unveiled to the public at Doncaster Locomotive Works' Open Day in Summer 1994.The first loco to have this livery was 56039 which attended the event. Load-Haul, along with Mainline Freight and Trans-Rail were purchased by EWS in 1996. | GB | TRAFFIC |
| 1752 | LDHC | LDH CORPORATION | | | SCAC4 |
| 1753 | LDHN | LEE, RONALD H INC | | | SCAC3 |
| 1754 | LDHV | LOCKWOOD, DON HORSE VAN SERVICE | | | SCAC3 |
| 1755 | LDI | Lauda Air S.p.A. | IATA: L4, Callsign: Lauda Italy, IATA Prefix: 372, | I | AVCODES |
| 1756 | LDI | Lauda Air Italy | IATA: NL, IATA designator changed to L4 | I | AVCODES |
| 1757 | LDI | Lauda Air Italy | | | ICAO1 |
| 1758 | LDIC | L & D INC | | | SCAC4 |
| 1759 | LDIF | LOGISTICS DISPATCH INC | | | SCAC4 |
| 1760 | LDIG | LIL DIGGER TRANSPORT LLC | | | SCAC4 |
| 1761 | LDIK | LINE DRIVE INC | | | SCAC4 |
| 1762 | LDIM | LT DELIVERY INC | | | SCAC4 |
| 1763 | LDIN | LIME DISTRIBUTION INC | | | SCAC3 |
| 1764 | LDIN | LANDIS FARMS INC | | | SCAC4 |
| 1765 | LDIO | LODI TRANSPORT INC | | | SCAC3 |
| 1766 | LDIP | LDI TRUCKING INC | | | SCAC4 |
| 1767 | LDIR | LASER DENTAL INNOVATIONS | | | SCAC4 |
| 1768 | LDIT | LDI TRANSPORT INC | | | SCAC3 |
| 1769 | LDIT | LDI TRANSPORT INC | | | SCAC4 |
| 1770 | LDJC | L D J CO | | | SCAC3 |
| 1771 | LDJC | LDJ COMPANY | | | SCAC4 |
| 1772 | LDJI | LUDONJA INC | | | SCAC4 |
| 1773 | LDJK | LDJ TRUCKING LLC | | | SCAC4 |
| 1774 | LDKC | L & D TRUCKING CO | | | SCAC4 |
| 1775 | LDKE | LITTLE DONKEY ENTERPRISES INC | | | SCAC3 |
| 1776 | LDKG | LD TRUCKING INC | | | SCAC3 |
| 1777 | LDKG | LANDSHARK LOGISTICS INC | | | SCAC4 |
| 1778 | LDKI | LIEDKIE MOVING & STORAGE INC | | | SCAC4 |
| 1779 | LDKN | LONG ISLAND KEROSENE CO | | | SCAC4 |
| 1780 | LDKO | LDK LOGISTICS | | | SCAC4 |
| 1781 | LDKP | L & D TRUCKING & SCRAP | | | SCAC4 |
| 1782 | LDKR | LINDE TRUCKING & TRAILER | | | SCAC4 |
| 1783 | LDL | Aerologic | | RUS | AVCODES |
| 1784 | LDL | Aerologic | | | ICAO1 |
| 1785 | LDLB | LANDMARK DISTRIBUTION LLC | | | SCAC4 |
| 1786 | LDLC | LOAD DELIVERED LOGISTICS LLC | | | SCAC4 |
| 1787 | LDLD | LAND-O-SUN DAIRIES LLC | | | SCAC4 |
| 1788 | LDLE | LCS DELIVERIES LLC | | | SCAC4 |
| 1789 | LDLF | L. D. L. TRANSFER, INC | | | SCAC3 |
| 1790 | LDLH | LOVETT, DUANE LIVESTOCK HAULING | | | SCAC3 |
| 1791 | LDLI | LEADILL, ERNEST JR | | | SCAC3 |
| 1792 | LDLK | LADY LUCK RANCH | | | SCAC3 |
| 1793 | LDLN | LOAD LINE LTD | | | SCAC3 |
| 1794 | LDLN | LOAD LINE MFG INC | | | SCAC4 |
| 1795 | LDLO | LAD LOGISTICS LLC | | | SCAC4 |
| 1796 | LDLR | LDL TRUCKING | | | SCAC3 |
| 1797 | LDLV | LES DISTRIBUTIONS LOUISEVILLE INC | | | SCAC4 |
| 1798 | LDLW | LAIDLAW TRANSIT INC | | | SCAC3 |
| 1799 | LDLW | LAIDLAW TRANSIT INC | | | SCAC4 |
| 1800 | LDLX | General American Transportation Corp. | 7/1937-1/1941 | | NAKINA |
