| 7001 | LSM | Aerobusinessservice | | RUS | AVCODES |
| 7002 | LSM | Luxaviation San Marino S.r.l. | Callsign: Titan, | RSM | AVCODES |
| 7003 | LSM | Aerobusinessservice | | | ICAO1 |
| 7004 | LSM | LAKE SHORE MOTOR COACH LINES INC | | | SCAC4 |
| 7005 | LSM | Linea San Martin | | RA | TRAFFIC |
| 7006 | LSMC | LOUISVILLE SCRAP MATERIAL CO INC | | | SCAC3 |
| 7007 | LSME | LALIS - SPECIAL | | | SCAC4 |
| 7008 | LSMG | LES TRANSPORTS MARIO GAGNON INC | | | SCAC4 |
| 7009 | LSMI | LAKE SHORE MOVERS INC | | | SCAC3 |
| 7010 | LSMI | LOPEZ SCRAP METAL INC | | | SCAC4 |
| 7011 | LSMJ | L S M J TRUCKING CO | | | SCAC3 |
| 7012 | LSMK | LOSEE, MIKE TRUCKING | | | SCAC3 |
| 7013 | LSML | LARSEN MOTOR LINES INC | | | SCAC3 |
| 7014 | LSMN | LAMARQUE SANCHEZ, MIREYA NOHEMI | | | SCAC4 |
| 7015 | LSMP | L & S MACHINERY EXPRESS INC | | | SCAC4 |
| 7016 | LSMQ | LAKE SHORE MOTOR EXPRESS | | | SCAC3 |
| 7017 | LSMR | LAKE SUPERIOR & MISSISSIPPI RAILROAD | | | PWRC |
| 7018 | LSMS | Lake Shore & Michigan Southern | | USA | TRAFFIC |
| 7019 | LSMT | LAKE SUPERIOR MUSEUM OF TRANSPORTATION | | | PWRC |
| 7020 | LSMT | LEIGHTON SMALL TRUCK SERVICE | | | SCAC3 |
| 7021 | LSMX | The Andersons-Rail Group | added 10/2004; 7/2005 | | NAKINA |
| 7022 | LSMX | Progress Rail Services Corp. | added 10/1998; 7/2000; eliminated 10/2004 | | NAKINA |
| 7023 | LSMX | Louisville Scrap Material Co. Inc. | added 1/1996; eliminated 10/1998 | | NAKINA |
| 7024 | LSMX | Louisville Scrap Material Co. Inc. | added 1/96; eliminated 10/98 | | NRHS |
| 7025 | LSMX | Progress Rail Services Corp. | added 10/98; 7/2000 | | NRHS |
| 7026 | LSMX | THE ANDERSONS-RAIL GROUP. [PROGRESS RAIL SERVICES CORP.] (LOUISVILLE SCRAP METAL CO. INC.) | | | PWRC |
| 7027 | LSMX | Progress Rail Services Corporation | | | RSRV |
| 7028 | LSMX | ANDERSONS INC, THE | | | SCAC4 |
| 7029 | LSMZ | LAKE SUPERIOR MUSEUM OF TRANSPORTATION | | | PWRC |
| 7030 | LSN | Silesian Air SP. Z.O.O. Regionalne Linie Lotnicze | Callsign: Silesian, | PL | AVCODES |
| 7031 | LSN | VL Servicios Nacionales, S.A. de C.V. | Callsign: Servianl, | MEX | AVCODES |
| 7032 | LSNA | LESINA, DALE TRUCKING | | | SCAC3 |
| 7033 | LSNE | LARSON, E W & SONS, INC | | | SCAC3 |
| 7034 | LSNF | LESSING FARMS | | | SCAC4 |
| 7035 | LSNH | LARSEN, RALPH H | | | SCAC3 |
| 7036 | LSNI | LISANTI FOODS INC | | | SCAC3 |
| 7037 | LSNJ | LOGISTIC SYSTEMS OF NJ INC | | | SCAC3 |
| 7038 | LSNL | LASSEN LUMBER | | | SCAC3 |
| 7039 | LSNL | LIBRA SHIPPING B V | | | SCAC4 |
| 7040 | LSNM | LARSON, OTTO | | | SCAC3 |
| 7041 | LSNO | LARSEN OIL COMPANY INC | | | SCAC4 |
| 7042 | LSNR | L S TRANSPORT INC | | | SCAC4 |
| 7043 | LSNS | LIVINGSTON STORAGE & TRANSFER COMPA | | | SCAC3 |
| 7044 | LSNS | LIVINGSTON STORAGE & TRANSFER COMPA | | | SCAC4 |
| 7045 | LSNT | LARSON, THORLEIF F | | | SCAC3 |
| 7046 | LSNT | LES INSTALLATIONS SOUDINS 1990 LTD | | | SCAC4 |
| 7047 | LSNU | LS-NIKKO COPPER | | | SCAC4 |
| 7048 | LSNV | LANIGAN STORAGE & VAN CO INC | | | SCAC3 |
| 7049 | LSNV | LANIGAN STORAGE & VAN CO INC | | | SCAC4 |
| 7050 | LSO | Aerolineas Del Sol, S.A. de C.V. | Callsign: Lineas Sol, | MEX | AVCODES |
| 7051 | LSO | Lone Star Communications, Inc. | Callsign: Starcom, | USA | AVCODES |
| 7052 | LSO | Louisiana Southern Ry. Co. | 1/1975-1/1980 | | NAKINA |
| 7053 | LSO | Louisiana Southern Ry. Co. (Southern Ry. System) | 10/1966 | | NAKINA |
| 7054 | LSO | Louisiana Southern Ry. | 4/1938-7/1965 | | NAKINA |
| 7055 | LSO | Louisiana Southern Ry. (N.O.T.&M. Ry. Co., Lessee) | 7/1923 | | NAKINA |
| 7056 | LSO | Louisiana Southern Ry. | 4/38-7/65 | | NRHS |
| 7057 | LSO | Louisiana Southern Ry. Co. (Southern Ry. System) | Oct-66 | | NRHS |
| 7058 | LSO | Louisiana Southern Ry. Co. | 1/75-1/80 | | NRHS |
| 7059 | LSO | NORFOLK SOUTHERN [SOUTHERN; LOUISIANA SOUTHERN RY.] | | | PWRC |
| 7060 | LSO | Louisiana Southern Railway | | | RSRV |
| 7061 | LSOA | LOGISTICS SERVICES OF AMERICA | | | SCAC4 |
| 7062 | LSOC | LA-SHER OIL CO INC | | | SCAC4 |
| 7063 | LSON | LOGISTICS SOLUTIONS OF NORTH CAROLI | | | SCAC4 |
| 7064 | LSOP | L & S TRANSPORT | | | SCAC3 |
| 7065 | LSOR | LESSORS INC | | | SCAC3 |
| 7066 | LSOR | LESSORS INC | | | SCAC4 |
| 7067 | LSOT | LANCASTER & SONS TRUCKING CO INC | | | SCAC3 |
| 7068 | LSOV | LONE STAR OVERNIGHT | | | SCAC4 |
| 7069 | LSOX | General American Transportation Corp. | 1/1946-4/1947 | | NAKINA |
| 7070 | LSOX | Lake States Oil Co. | 1/1945 | | NAKINA |
| 7071 | LSOX | LAKE STATES OIL CO. (GENERAL AMERICAN TRANSPORTATION CORP.) | | | PWRC |
| 7072 | LSP | Spectrum Aviation Incorporated | Callsign: Air Tony, | GB | AVCODES |
| 7073 | LSP | Spectrum Aviation Incorporated | | | ICAO1 |
| 7074 | LSPB | LES PRODUITS GILBERT INC | | | SCAC4 |
| 7075 | LSPC | LONE STAR PACKAGE CAR COMPANY | | | SCAC3 |
| 7076 | LSPC | LYSAKER SHIPPING CO LTD | | | SCAC4 |
| 7077 | LSPD | LIGHTSPEED TRUCKING | | | SCAC4 |
| 7078 | LSPE | LAND & SEA PET INC | | | SCAC3 |
| 7079 | LSPI | L S TRANSPORT INC | | | SCAC3 |
| 7080 | LSPI | LAZER SPOT INC | | | SCAC4 |
| 7081 | LSPK | LSP LINE | | | SCAC4 |
| 7082 | LSPM | LAND & SEA PETROLEUM | | | SCAC4 |
| 7083 | LSPN | LAND SPAN INC | | | SCAC3 |
| 7084 | LSPN | LAND SPAN INC | | | SCAC4 |
| 7085 | LSPO | LESLEE SPORTS INC | | | SCAC4 |
| 7086 | LSPP | LEPTA SHIPPING CO LTD. | | | SCAC3 |
| 7087 | LSPP | LEPTA SHIPPING CO LTD | | | SCAC4 |
| 7088 | LSPQ | LSP TANKER CORP | | | SCAC3 |
| 7089 | LSPR | LES PIERRES TECHNOPROFIL INC | | | SCAC4 |
| 7090 | LSPU | LIANSHI NEW MATERIAL CORP., LTD. | | PRC | BIC |
| 7091 | LSPU | RICHLAND LSP | | | SCAC4 |
| 7092 | LSPX | Lone Star Producing Co. | 1/1945-1/1975; eliminated 4/1975 | | NAKINA |
| 7093 | LSPX | Lone Star Producing Co. | 1/52-1/75; eliminated 4/75 | | NRHS |
| 7094 | LSPX | LONE STAR PRODUCING CO. | | | PWRC |
| 7095 | LSPX | LONE STAR PRODUCING CO | | | SCAC3 |
| 7096 | LSPZ | LAKE SUPERIOR PAPER | | | PWRC |
| 7097 | LSQC | LISTER LOGISTICS LLC | | | SCAC4 |
| 7098 | LSQL | LOUISIANA STONE LLC | | | SCAC4 |
| 7099 | LSQT | LONE STAR FREIGHTLINES INC | | | SCAC3 |
| 7100 | LSR | Alsair | | | ICAO1 |
