| 7901 | LUBX | Socony-Vacuum Oil Co. Lubrite Division (Philip Metals) | | | RSRV |
| 7902 | LUBX | CROSS OIL & REFINING CO | | | SCAC3 |
| 7903 | LUBZ | LURIA BROS. DIVISION OF CONNELL LIMITED PARTNERSHIP | | | PWRC |
| 7904 | LUC | Albinati Aeronautics S.A. | Callsign: Stef, | CH | AVCODES |
| 7905 | LUC | Alninati Aeronautics | | | ICAO1 |
| 7906 | LUCB | LUCAS BROTHERS | | | SCAC3 |
| 7907 | LUCB | LUCAS BROTHERS | | | SCAC4 |
| 7908 | LUCD | LUCIO, JOE DAIRY | | | SCAC3 |
| 7909 | LUCF | LUCAS, FRANK CO INC | | | SCAC3 |
| 7910 | LUCH | LUSAMERICAN COACH TOURS | | | SCAC3 |
| 7911 | LUCH | Lüchow-Schmarsauer Eisenbahn GmbH | | D | TRAFFIC |
| 7912 | LUCI | L U CARRIERS INC | | | SCAC3 |
| 7913 | LUCL | LUCAS LINE, THE | | | SCAC3 |
| 7914 | LUCM | LUCAS MARINE TRANSPORT | | | SCAC3 |
| 7915 | LUCM | LUMCA INC | | | SCAC4 |
| 7916 | LUCO | LUCO CARTAGE CO | | | SCAC3 |
| 7917 | LUCO | LUCO CARTAGE CO | | | SCAC4 |
| 7918 | LUCS | LUCIUS INCORPORATED | | | SCAC3 |
| 7919 | LUCT | LUCKEN TRUCKING | | | SCAC3 |
| 7920 | LUCX | Services Unlimited | added 1/1994; 7/2000-7/2005 | | NAKINA |
| 7921 | LUCX | Railroad Car Management Co., Inc. | added 1/1981; eliminated 1/1994 | | NAKINA |
| 7922 | LUCX | LUCX, Inc. | added 4/1972; 1/1975-1/1980; eliminated 1/1981 | | NAKINA |
| 7923 | LUCX | LUCX, Inc. | added 4/72; 1/75-1/80; eliminated 1/81 | | NRHS |
| 7924 | LUCX | Railroad Car Management Co., Inc. | added 1/81; eliminated 1/94 | | NRHS |
| 7925 | LUCX | Services Unlimited | added 1/94; 7/2000 | | NRHS |
| 7926 | LUCX | SERVICES UNLIMITED [RAILROAD CAR MANAGEMENT CO., INC (RCMX); LUCX, INC.] | | | PWRC |
| 7927 | LUCX | LUCX Inc. (Railroad Car Management) | | | RSRV |
| 7928 | LUCX | SERVICES UNLIMITED | | | SCAC4 |
| 7929 | LUCY | LUCKY STORES INC | | | SCAC3 |
| 7930 | LUCY | LUCO TRUCKING | | | SCAC4 |
| 7931 | LUD | Märkische Verkehrsgesellschaft mbH Lüdenscheid | Real: MVG, City: Lüdenscheid | D | TRAFFIC |
| 7932 | LUDA | LUCE, DONALD A | | | SCAC3 |
| 7933 | LUDB | LUNDINS DRIVEBACK LTD | | | SCAC3 |
| 7934 | LUDC | LUDY, CHARLES T JR TRUCKING | | | SCAC3 |
| 7935 | LUDD | LUNDES DISTRIBUTORS | | | SCAC3 |
| 7936 | LUDE | LEUDTKES ELIMINATOR TRUCKING INC | | | SCAC3 |
| 7937 | LUDF | LUDFORD FRUIT PRODUCTS INC | | | SCAC3 |
| 7938 | LUDM | LUDEMAN TRUCKING | | | SCAC4 |
| 7939 | LUDN | LOUDEN TRUCKING | | | SCAC3 |
| 7940 | LUDP | LUDOLPH TRUCK LINE | | | SCAC3 |
| 7941 | LUDS | LUNDE TRUCK SALES | | | SCAC3 |
| 7942 | LUDT | LUNDY TRANSFER | | | SCAC3 |
| 7943 | LUDW | LUDWIG, M & SONS LIMITED | | | SCAC4 |
| 7944 | LUDY | LUDDYS EXPRESS, INC | | | SCAC3 |
| 7945 | LUE | Aeroclub De Alicante | | E | AVCODES |
| 7946 | LUE | Lühring GmbH | | DE | VKM |
| 7947 | LUEB | LUEBESMIER, MELVIN J CONSOLIDATED E | | | SCAC3 |
| 7948 | LUED | LUEDDEKE, WILLIAM M, MOTOR FREIGHT | | | SCAC3 |
| 7949 | LUEN | LUTHERAN ENTERPRISES | | | SCAC3 |
| 7950 | LUEP | LUMBER EXPRESS INC | | | SCAC3 |
| 7951 | LUEQ | LUEKING TRANSFER CO INC | | | SCAC3 |
| 7952 | LUET | LUE FRAN TRUCKING | | | SCAC3 |
| 7953 | LUET | LUECK TRUCKING INC | | | SCAC4 |
| 7954 | LUFI | LUNDS FISHERIES | | | SCAC3 |
| 7955 | LUFI | LUNDS FISHERIES INC | | | SCAC4 |
| 7956 | LUFR | LARFER FREIGHT LINES LTD. NY | | | SCAC3 |
| 7957 | LUFR | LAUFER GROUP INTERNATIONAL LTD | | | SCAC4 |
| 7958 | LUFT | LUF TX TIGERS TRANSPORTATION INC | | | SCAC4 |
| 7959 | LUG | E-Aviation Swiss SAGL | | CH | AVCODES |
| 7960 | LUGO | LUGO LOZANO, ALEF HUMBERTO | | | SCAC4 |
| 7961 | LUGR | LUNDGREN, GARY R | | | SCAC3 |
| 7962 | LUHB | LUCAS, HERBERT E | | | SCAC3 |
| 7963 | LUIN | LUKA UNLIMITED INC | | | SCAC4 |
| 7964 | LUIO | LUONGO, R TRUCKING | | | SCAC3 |
| 7965 | LUIS | LUIS DELIVERIES INC | | | SCAC4 |
| 7966 | LUIT | LUISI TRUCK LINES INC | | | SCAC3 |
| 7967 | LUJE | LUCAS, JAMES E | | | SCAC3 |
| 7968 | LUJK | LOU-JAK TRUCKING SERVICE | | | SCAC3 |
| 7969 | LUJN | LUJAN TRANSPORT INC | | | SCAC3 |
| 7970 | LUJN | LUJAN TRUCKING | | | SCAC4 |
| 7971 | LUJO | LUJO TRUCKING CO INC | | | SCAC3 |
| 7972 | LUJW | LUND, J W TRUCKING CO | | | SCAC4 |
| 7973 | LUK | Lukoil-Avia | Callsign: Lukoil, | RUS | AVCODES |
| 7974 | LUK | LUKoil-Avia | | | ICAO1 |
| 7975 | LUKA | LUKA TRANS | | | SCAC4 |
| 7976 | LUKB | LUCKENBACH STEAMSHIP COMPANY INC | | | SCAC3 |
| 7977 | LUKC | LUCKY OIL CO | | | SCAC4 |
| 7978 | LUKE | LUKEHART TRUCKING LLC | | | SCAC4 |
| 7979 | LUKI | LUKE BROS INC | | | SCAC4 |
| 7980 | LUKK | LUKE, KIRK TRANSPORT INC | | | SCAC4 |
| 7981 | LUKL | LUCKEY LOGISTICS LLC | | | SCAC4 |
| 7982 | LUKO | LUKOW BROTHERS | | | SCAC3 |
| 7983 | LUKo | Neftohimtrejn | | BG | VKM |
| 7984 | LUKQ | LUKES TRANSFER AND STORAGE | | | SCAC3 |
| 7985 | LUKR | LUKE TRANSPORT INC | | | SCAC3 |
| 7986 | LUKS | LUKES TRUCKING | | | SCAC3 |
| 7987 | LUKV | LUCAS, KEVIN TRUCKING INC | | | SCAC3 |
| 7988 | LUKV | LUCAS, KEVIN TRUCKING INC | | | SCAC4 |
| 7989 | LUKW | LUKE, W WAYNE | | | SCAC3 |
| 7990 | LUKX | Brae Transportation Inc., a Subsidiary of Brae Corp. | added 4/1989 | | NAKINA |
| 7991 | LUKX | Brae Transportation Inc., a Subsidiary of Brae Corp. | added 4/89 | | NRHS |
| 7992 | LUKX | BRAE TRANSPORTATION INC., SUB. BRAE CORP. | | | PWRC |
| 7993 | LUKY | LUCKEY TRUCKING, INC | | | SCAC3 |
| 7994 | LUKY | LUCKEY TANK LINES LLC | | | SCAC4 |
| 7995 | LULD | LUTH, LARRY D | | | SCAC3 |
| 7996 | LULN | LUCAS LINES INC | | | SCAC3 |
| 7997 | LULO | LUCKY LADY OIL CO INC | | | SCAC3 |
| 7998 | LULP | LUALLIPAM INC | | | SCAC3 |
| 7999 | LULU | OVERSEAS CONTAINER LEASING | | | SCAC4 |
| 8000 | LULW | LUXURY LIMOUSINE SERVICE | | | SCAC3 |
