| 5001 | LMTX | Chartrand's Tank Car Service, Inc. | 1/1994; eliminated 4/1996; 7/2000-7/2005 (not listed) | | NAKINA |
| 5002 | LMTX | LMT Associates | added 7/1978; 1/1980; eliminated 10/1985 | | NAKINA |
| 5003 | LMTX | Libby, McNeill & Libby | 7/1937-10/1957; eliminated 4/1961 | | NAKINA |
| 5004 | LMTX | Libby, McNeill & Libby (tank cars no. 1355-1366) | Apr-38 | | NRHS |
| 5005 | LMTX | Libby, McNeill & Libby | 1/52-10/57; eliminated 4/61 | | NRHS |
| 5006 | LMTX | LMT Associates | added 7/78; 1/80 | | NRHS |
| 5007 | LMTX | Chartrand's Tank Car Service, Inc. | 1/94; eliminated 4/96; 7/2000 | | NRHS |
| 5008 | LMTX | *LIBBY, MCNEILL & LIBBY | | | PWRC |
| 5009 | LMTX | +CHARTRAND'S TANK CAR SERVICE, INC. [LMT ASSOCIATES] | | | PWRC |
| 5010 | LMTX | LMT Associates (Chartrand's Tank Car Service) | | | RSRV |
| 5011 | LMTX | CHARTRANDS TANK CAR SERVICE INC | | | SCAC4 |
| 5012 | LMTY | L & M TRANSFER | | | SCAC3 |
| 5013 | LMTY | LINDLEY, MIKE TRUCKING LLC | | | SCAC4 |
| 5014 | LMU | Almasria Universal Airlines | IATA: UJ, Callsign: Almasria, | ET | AVCODES |
| 5015 | LMUS | LEMUS TRUCKING | | | SCAC3 |
| 5016 | LMUU | LANDMARK UNION LIMITED | | | SCAC3 |
| 5017 | LMV | Lemwigbahnen | | DK | TRAFFIC |
| 5018 | LMVC | LEONARDS MOVERS CORP | | | SCAC3 |
| 5019 | LMVLR | Leek and Manifold Valley Light Railway | The L&MVLR was a 2' 6\" gauge line in Derbyshire, England. It ran through picturesque but rural country, with a very sparse population to sustain it, from Waterhouses (at the end of the North Staffordshire Railway's branch from Leek) to Hulme End, a distance of just over 8 miles. The line opened in 1904 and was operated by the NSR, until both were absorbed into the London, Midland and Scottish Railway in 1923. The LMS continued to operate it at an ever increasing loss due to competition from road transport until finally, in 1934, the dairy that was its main source of traffic closed, and the railway itself soon succumbed. All was not lost, however, because the local council ensured that most of the track-bed was retained as a cycle-way and footpath, and thus can still be enjoyed today. | GB | TRAFFIC |
| 5020 | LMVO | L & M BOTRUC RENTALS INC | | | SCAC4 |
| 5021 | LMVS | LEHIGH MOVING & STORAGE INC | | | SCAC3 |
| 5022 | LMVU | LINEAS MARITIMAS VALENCIANAS | | | SCAC3 |
| 5023 | LMVX | Leas & McVitty, Inc. | 7/1937-10/1957; eliminated 10/1960 | | NAKINA |
| 5024 | LMVX | Leas & McVitty, Inc. | 4/38-10/57; eliminated 10/60 | | NRHS |
| 5025 | LMVX | LEAS & MCVITTY, INC. | | | PWRC |
| 5026 | LMWE | L & M WESTERN TIRE & OIL INC | | | SCAC4 |
| 5027 | LMWG | L & M TOWING | | | SCAC4 |
| 5028 | LMWT | LEMOINE, WENDY QUARTER HORSES | | | SCAC4 |
| 5029 | LMWX | MHC Inc., Wholly Owner Subsidiary of ConAgra Foods | added 1/2002 | | NAKINA |
| 5030 | LMWX | MHC, Inc., Wholly Owned Subsidiary of ConAgra, Inc. | added 7/1992; 1/1994-7/2000; eliminated 4/2001; eliminated 1/2002 | | NAKINA |
| 5031 | LMWX | Railway Marketing Corp. | added 1/1980; 1/1980; eliminated 7/1992 | | NAKINA |
| 5032 | LMWX | Louis M. Martini (L.M. Martini Grape Products) | 1/1943 | | NAKINA |
| 5033 | LMWX | Railway Marketing Corp. | added 1/80; 1/80; eliminated 7/92 | | NRHS |
| 5034 | LMWX | MHC, Inc., Wholly Owned Subsidiary of ConAgra, Inc. | added 7/92; 1/94-7/2000; eliminated 4/2001 | | NRHS |
| 5035 | LMWX | *L. M. MARTINI GRAPE PRODUCTS [LOUIS M. MARTINI] | | | PWRC |
| 5036 | LMWX | *MHC, INC., WHOLLY OWNED SUB. OF CONAGRA, INC.[RAILWAY MARKETING CORP.] | | | PWRC |
| 5037 | LMWX | L.M. Martini Grape Products (ConAgra) | | | RSRV |
| 5038 | LMX | Aerolineas Mexicanas J.S., S.A. de C.V. | Callsign: Lineas Mexicanas, | MEX | AVCODES |
| 5039 | LMX | Aeronaves Especializadas en Transportaciones Aereas, S.A. de C.V. | Callsign: Aeroasesa, | MEX | AVCODES |
| 5040 | LMX | Aerolineas Mexicanas J S | | | ICAO1 |
| 5041 | LMX | The L. Martin Co. | 7/1937 (not listed) | | NAKINA |
| 5042 | LMX | *L. MARTIN CO. | | | PWRC |
| 5043 | LMX | *RETIRED 09-01-92 ATP | | | PWRC |
| 5044 | LMX | General Electric Leasing | | USA | TRAFFIC |
| 5045 | LMXC | LA MEXICANA INC | | | SCAC4 |
| 5046 | LMXE | LEONARD MOTOR EXPRESS, INC | | | SCAC3 |
| 5047 | LMXF | LEINGRUBER, MAX FARMS | | | SCAC3 |
| 5048 | LMXI | LAND MASTER TRANSPORTATION INC | | | SCAC4 |
| 5049 | LMXP | LAMBERT-MARKS EXPRESS | | | SCAC3 |
| 5050 | LMXP | LTM TRANSPORTATION CORPORATION | | | SCAC4 |
| 5051 | LMXR | LITTLE MOOSE EXPRESS | | | SCAC4 |
| 5052 | LMXS | LOCOMOTE EXPRESS LLC | | | SCAC4 |
| 5053 | LMXT | LOMAX TRANSPORT INC | | | SCAC3 |
| 5054 | LMY | Air Almaty JSC | IATA: K7, IATA Prefix: 346, | KZ | AVCODES |
| 5055 | LMY | Air Almaty | | | ICAO1 |
| 5056 | LMYH | LEMAY, HAROLD ENTERPRISES INC | | | SCAC4 |
| 5057 | LMYN | LOSSE, MYLAN | | | SCAC4 |
| 5058 | LMYR | LAMEYER, WALTER L | | | SCAC4 |
| 5059 | LMZ | JSC Starline.kz | IATA: DZ, Callsign: Alunk, | KZ | AVCODES |
| 5060 | LMZ | Air Almaty ZK | | | ICAO1 |
| 5061 | LN | Jamahirya Libyan Arab Airlines | ICAO: LAA, Callsign: Libair, Name changed to Libyan Airlines | LAR | AVCODES |
| 5062 | LN | Libyan Airlines | ICAO: LAA, Callsign: Libair, Name changed from Jamahirya Libyan Arab Airlines | LAR | AVCODES |
| 5063 | LN | CSX Transportation, Inc. | added 7/1987; 1/1994-7/2005 | | NAKINA |
| 5064 | LN | Seaboard System R.R., Inc. | added 1/1983; eliminated 7/1987 | | NAKINA |
| 5065 | LN | Louisville & Nashville R.R. Co. | 1/1975-1/1980; eliminated 1/1983 | | NAKINA |
| 5066 | LN | Louisville & Nashville R.R. Co. | 1/75-1/80; eliminated 1/83 | | NRHS |
| 5067 | LN | Seaboard System R.R., Inc. | added 1/83; eliminated 7/87 | | NRHS |
| 5068 | LN | CSX Transportation, Inc. | added 7/87; 1/94-7/2000 | | NRHS |
| 5069 | LN | CSX [SEABOARD; LOUISVILLE & NASHVILLE RR] | | | PWRC |
| 5070 | LN | Louisville and Nashville Railroad (CSX Transportation) | | | RSRV |
| 5071 | LN | LOUISVILLE AND NASHVILLE RAILROAD C | | | SCAC4 |
| 5072 | LN | Louisville and Nashville | | USA | TRAFFIC |
| 5073 | LN | LeNord S.r.l. | | IT | VKM |
| 5074 | LNA | LNAir Air Services, S.L. | Callsign: Elnair, | E | AVCODES |
| 5075 | LNA | Lnair Air Services | | | ICAO1 |
| 5076 | LNAA | LNAC ACQUISITION CORP | | | SCAC3 |
| 5077 | LNAA | LIONS GATE TRANSPORT INC | | | SCAC4 |
| 5078 | LNAB | LOUET NORTH AMERICA | | | SCAC4 |
| 5079 | LNAC | Chattahoochee Bay Rd., Inc. | added 4/2007 | | NAKINA |
| 5080 | LNAC | H&S R.R. Co. | 1/1994-7/2005; eliminated 4/2007 | | NAKINA |
| 5081 | LNAC | Ferdinand & Huntingburg R.R. | added 4/1988 | | NAKINA |
| 5082 | LNAC | Louisville, New Albany & Corydon R.R. Co. | 1/1975-1/1980; eliminated 4/1988 | | NAKINA |
| 5083 | LNAC | Louisville, New Albany & Corydon R.R. Co. | 1/75-1/80; eliminated 4/88 | | NRHS |
| 5084 | LNAC | Ferdinand & Huntingburg R.R. | added 4/88 | | NRHS |
| 5085 | LNAC | H&S R.R. Co. | 1/94-7/2000 | | NRHS |
| 5086 | LNAC | *LOUISVILLE, NEW ALBANY & CORYDON RAILROAD CO. | | | PWRC |
| 5087 | LNAC | *FERDINAND & HUNTINGBURG RAILROAD | | | PWRC |
| 5088 | LNAC | +CHATTAHOOCHIE BAY RR, INC. [H & S RAILROAD COMPANY, INC.] | | | PWRC |
| 5089 | LNAC | Louisville, New Albany and Corydon Railroad | | | RSRV |
| 5090 | LNAC | Louisville, New Albany & Corydon R.R. Co. | | USA | TRAFFIC |
| 5091 | LNAD | LEONARD TRUCKING CO | | | SCAC3 |
| 5092 | LNAE | LINARES TRANSPORT | | | SCAC4 |
| 5093 | LNAF | L & A FORWARDING INC | | | SCAC3 |
| 5094 | LNAG | L & A TRANSPORTATION INC | | | SCAC3 |
| 5095 | LNAG | LNC 3000 USA INC | | | SCAC4 |
| 5096 | LNAH | LANA SHIPPING CORPORATION | | | SCAC3 |
| 5097 | LNAH | L S T SERVICES INC | | | SCAC4 |
| 5098 | LNAJ | LANGRECK, ANTON J | | | SCAC3 |
| 5099 | LNAK | LNA TRUCKING | | | SCAC3 |
| 5100 | LNAL | Louisville, New Albany and Corydon R.R. | added 1/1989; 1/1994; eliminated 7/1995; added 1/1996; 7/2000; eliminated 4/2004; 7/2005 | | NAKINA |
