| 1 | LR | Lineas Aereas Costarricenses S.A. (LACSA) | ICAO: LRC, Callsign: LACSA, IATA Prefix: 133, Name changed to Avianca Costa Rica | CR | AVCODES |
| 2 | LR | Avianca Costa Rica S.A. | ICAO: LRC, Callsign: LACSA, IATA Prefix: 133, Name changed from Lineas Aereas Costarricenses S.A. (LACSA) | CR | AVCODES |
| 3 | LR | Little River R.R. (Co.) | 7/1923-7/1954 | | NAKINA |
| 4 | LR | Little River R.R. | 4/38-1/52 | | NRHS |
| 5 | LR | *LITTLE RIVER RAILROAD CO. | | | PWRC |
| 6 | LR | *LANDISVILLE RAILROAD | | | PWRC |
| 7 | LRA | Little Red Air Service | Callsign: Little Red, | CDN | AVCODES |
| 8 | LRA | Little Red Air Service | | | ICAO1 |
| 9 | LRAA | LARAS TRUCKING INC | | | SCAC4 |
| 10 | LRAB | LAHAI ROI TRUCKING | | | SCAC4 |
| 11 | LRAC | LEE RACING INC | | | SCAC4 |
| 12 | LRAD | LERAD | | | SCAC4 |
| 13 | LRAF | Rīgas Autobusu Fabrika (RAF): Latvija | Real: RAF | LV | TRAFFIC |
| 14 | LRAG | LDS RAGS | | | SCAC4 |
| 15 | LRAI | LAIRD, R TRANSPORT INC | | | SCAC4 |
| 16 | LRAK | LARA, HENRY TRUCKING | | | SCAC3 |
| 17 | LRAQ | LONGFIELD, RANDALL A | | | SCAC4 |
| 18 | LRAS | L & R ASSOCIATES | | | SCAC3 |
| 19 | LRAS | LANDGRAFF TREE SERVICE | | | SCAC4 |
| 20 | LRAX | Latinoamerican Rail Association, Inc. | 1/1994; added 10/1996; 7/2000; eliminated 4/2002 | | NAKINA |
| 21 | LRAX | Latinoamerican Rail Association, Inc. | 1/94; added 10/96; 7/2000 | | NRHS |
| 22 | LRAX | LATINOAMERICAN RAIL ASSOCIATION, INC | | | PWRC |
| 23 | LRAX | Latinoamerican Railroad Association | | | RSRV |
| 24 | LRB | L R Airlines Ltd. | Callsign: Lady Racine, | CZ | AVCODES |
| 25 | LRB | L R Airlines | | | ICAO1 |
| 26 | LRBH | London Retro Bus Hire | | GB | TRAFFIC |
| 27 | LRBI | LOPEZ RODRIGUEZ, MARTHA I | | | SCAC4 |
| 28 | LRBQ | LORBACHER, J L | | | SCAC3 |
| 29 | LRBR | LARSEN BROS | | | SCAC3 |
| 30 | LRBS | LAKE ENTERPRISES LTD | | | SCAC4 |
| 31 | LRBT | LARSEN, BART TRUCKING | | | SCAC3 |
| 32 | LRBT | LITTLE RABBIT TRUCKING | | | SCAC4 |
| 33 | LRC | Lineas Aereas Costarricenses S.A. (LACSA) | IATA: LR, Callsign: LACSA, IATA Prefix: 133, Name changed to Avianca Costa Rica | CR | AVCODES |
| 34 | LRC | Avianca Costa Rica S.A. | IATA: LR, Callsign: LACSA, IATA Prefix: 133, Name changed from Lineas Aereas Costarricenses S.A. (LACSA) | CR | AVCODES |
| 35 | LRC | LACSA | IATA: LR | | ICAO1 |
| 36 | LRCB | LITTLE ROCK CRATE & BASKET CO | | | SCAC4 |
| 37 | LRCC | LRC INTERNATIONAL | | | SCAC4 |
| 38 | LRCD | LARIMER, CHARLES D | | | SCAC3 |
| 39 | LRCE | LA REPUBLICA CARGO EXPRESS CORP | | | SCAC4 |
| 40 | LRCH | L R CHARTER SERVICE (A DIV OF UNITE | | | SCAC3 |
| 41 | LRCI | LEDREW, R CO INC | | | SCAC3 |
| 42 | LRCI | LUTES, RICHARD CEDAR INC | | | SCAC4 |
| 43 | LRCK | LARICKS TOWING INC | | | SCAC4 |
| 44 | LRCM | LIGHT RIGGING CO | | | SCAC3 |
| 45 | LRCO | LAKE COUNTRY TRANSPORT INC | | | SCAC4 |
| 46 | LRCQ | LRC TRUCKING INC | | | SCAC4 |
| 47 | LRCR | LARSEN, CURTIS L | | | SCAC4 |
| 48 | LRCT | L R C TRUCK LINE | | | SCAC3 |
| 49 | LRCX | Livingston Rebuild Center, Inc. | 1/1994 (not listed); added 1/1997; 7/2000; eliminated 7/2001; 7/2005 (not listed) | | NAKINA |
| 50 | LRCX | Lesh Refining Corp. | 8/1920 | | NAKINA |
| 51 | LRCX | Livingston Rebuild Center, Inc. | 1/94; added 1/97; 7/2000; eliminated 7/2001 | | NRHS |
| 52 | LRCX | *LESH REFINING CORP. | | | PWRC |
| 53 | LRCX | +LIVINGSTON REBUILD CENTER, INC. | | | PWRC |
| 54 | LRCX | Livingston Rebuild Center | | | RSRV |
| 55 | LRCX | LIVINGSTON REBUILD CENTER, INC. | | | SCAC4 |
| 56 | LRD | Laredo Air | Callsign: Laredo Air, | USA | AVCODES |
| 57 | LRD | Laredo Air | | | ICAO1 |
| 58 | LRDA | LORDCO PARTS LTD | | | SCAC4 |
| 59 | LRDB | LAREDO TRANSPORT & STORAGE INC | | | SCAC4 |
| 60 | LRDC | LIGHTHOUSE R & D ENTERPRISES INC | | | SCAC4 |
| 61 | LRDH | LAREDO HARDWARE COMPANY | | | SCAC4 |
| 62 | LRDI | L & R DISTRIBUTION INC | | | SCAC3 |
| 63 | LRDI | LEGACY RACING OF DELAWARE INC | | | SCAC4 |
| 64 | LRDM | LA ROSA DEL MONTE EXPRESS INC | | | SCAC3 |
| 65 | LRDM | LA ROSA DEL MONTE EXPRESS INC | | | SCAC4 |
| 66 | LRDN | LORDON INC | | | SCAC3 |
| 67 | LRDN | L R D INCORPORATION | | | SCAC4 |
| 68 | LRDQ | LORRYS DELIVERY SERVICE | | | SCAC3 |
| 69 | LRDV | LEONARDS TRANSPORTATION INC (REFRIG | | | SCAC4 |
| 70 | LRDW | LARSEN, D W INTERMODAL INC | | | SCAC4 |
| 71 | LRDX | MidAmerican Energy Co. | added 4/1996; 7/2000-7/2005 | | NAKINA |
| 72 | LRDX | Le Ray Despatch Lines, Inc. | 8/1920 | | NAKINA |
| 73 | LRDX | MidAmerican Energy Co. | added 4/96; 7/2000 | | NRHS |
| 74 | LRDX | *LE RAY DESPATCH LINES, INC. | | | PWRC |
| 75 | LRDX | +MIDAMERICAN ENERGY COMPANY | | | PWRC |
| 76 | LRDX | MidAmerican Energy | | | RSRV |
| 77 | LRDX | MIDAMERICAN ENERGY COMPANY | | | SCAC4 |
| 78 | LRE | Lasare Airline | Callsign: Aero Lasare, | GE | AVCODES |
| 79 | LREA | LORELLA SHIPPING COMPANY | | | SCAC3 |
| 80 | LREC | LAND AIR EXPRESS INC | | | SCAC3 |
| 81 | LREC | LAND AIR EXPRESS INC | | | SCAC4 |
| 82 | LREI | LITTLE ROCK EXPRESS INC | | | SCAC4 |
| 83 | LReJ | Lund - Revinge Järnväg | 1905 - 1918 | S | svenska-lok.se |
| 84 | LREK | LEE, ROBERT E TRUCKING | | | SCAC4 |
| 85 | LREL | LAUREL PIPE LINE COMPANY (INC UNDER | | | SCAC3 |
| 86 | LREM | LUXE RENTALS | | | SCAC4 |
| 87 | LREN | LARSEN EQUIPMENT COMPANY | | | SCAC3 |
| 88 | LREQ | LaROSE TRANSPORT, INC | | | SCAC3 |
| 89 | LRER | LONG RUN EXPRESS LLC | | | SCAC4 |
| 90 | LREX | Lewis Railway Equipment Co. (Liquids Despatch Line) | 8/1920-7/1923 | | NAKINA |
| 91 | LREX | LEWIS RAILROAD EQUIPMENT CO. (LIQUIDS DESPATCH LINE) | | | PWRC |
| 92 | LRFD | LANTER COMPANY | | | SCAC3 |
| 93 | LRFD | LANTER DISTRIBUTING | | | SCAC4 |
| 94 | LRFT | LINDEN REFRIGERATED TRANSPORT | | | SCAC3 |
| 95 | LRG | Soluciones Aereas de la Laguna, S.A. de C.V. | Callsign: Solaer Laguna, | MEX | AVCODES |
| 96 | LRGB | LANDSTAR RANGER INC (BROKERAGE DIVI | | | SCAC4 |
| 97 | LRGN | LARGENT CARRIERS INC | | | SCAC3 |
| 98 | LRGO | LAKE REGION TRANSPORT INC | | | SCAC3 |
| 99 | LRGO | LAKE REGION TRANSPORT INC | | | SCAC4 |
| 100 | LRGP | L R G TRANSPORTATION & STORAGE CO I | | | SCAC4 |
