| 1 | LC | Legend Airlines, Inc. | ICAO: LGD, Callsign: Legendary, Ceased operations on 03 December 2002. | USA | AVCODES |
| 2 | LC | Varig Logistica, S/A | ICAO: VLO, Ceased operations 01 February 2012. Declared bankrupt 27 September 2012. IATA designator changed from 4V* | BR | AVCODES |
| 3 | LC | Loganair Limited | ICAO: LOG, Callsign: Logan, Designator recalled by IATA | GB | AVCODES |
| 4 | LC | Equatorial Congo Airlines Ltd (ECAir) | IATA Prefix: 753, Founded in 2011. Commenced operations on 24 September 2011. Declared bankrupt in France courts in October 2016. Flights operated by Privatair (PTI) | GQ | AVCODES |
| 5 | LC | Encompass Aviation, LLC | ICAO: ROM, Callsign: Rome, Ceased operations during 2018. | USA | AVCODES |
| 6 | LC | Grupo Corporativo Skyway. S.A. | | CR | AVCODES |
| 7 | LC | Lancaster & Chester Ry. Co. | 4/1938-7/2005 | | NAKINA |
| 8 | LC | Lancaster & Chester Ry. Co. | 4/38-7/2000 | | NRHS |
| 9 | LC | LANCASTER & CHESTER RAILWAY COMPANY | | | PWRC |
| 10 | LC | Lancaster and Chester Railway | | | RSRV |
| 11 | LC | LANCASTER & CHESTER RAILROAD LLC | | | SCAC4 |
| 12 | LC | Lancaster and Chester | | USA | TRAFFIC |
| 13 | LC | Lafarge Cement a.s. | | CZ | VKM |
| 14 | LC&N | Lake Charles & Northern R.R. (Southern Pacific Lines in Texas and Louisiana) | 8/1920-7/1923 | | NAKINA |
| 15 | LC&N | LAKE CHARLES & NORTHERN RAILROAD (SOUTHERN PACIFIC LINES IN TEXAS & LOUISIANA) | | | PWRC |
| 16 | LCA | Leconte Airlines | Callsign: Leconte, | USA | AVCODES |
| 17 | LCA | Leconte Airlines | | | ICAO1 |
| 18 | LCAB | LIMO CAB | | | SCAC3 |
| 19 | LCAE | LORE, CLARENCE A | | | SCAC3 |
| 20 | LCAE | LCA DEVELOPMENT INC | | | SCAC4 |
| 21 | LCAG | LUCCA TRUCKING | | | SCAC4 |
| 22 | LCAI | LUBRICATION COMPANY OF AMERICA | | | SCAC3 |
| 23 | LCAI | LE CLAN PANNETON (1993) INC | | | SCAC4 |
| 24 | LCAO | LARA CORREA, ALEJANDRO | | | SCAC4 |
| 25 | LCAQ | LAKE COUNTY AIR FREIGHT | | | SCAC3 |
| 26 | LCAR | LACHAPELLE, ANDRE | | | SCAC4 |
| 27 | LCAR | Carousel Buses | | GB | TRAFFIC |
| 28 | LCAT | LEADER OF CALIFORNIA TRANSPORTATION | | | SCAC3 |
| 29 | LCAT | LOGAN COUNTY ASPHALT CO | | | SCAC4 |
| 30 | LCAV | L C EXPRESS LLC | | | SCAC4 |
| 31 | LCAX | Lafarge Calcium Aluminates, Inc. | 7/2005 (not listed) | | NAKINA |
| 32 | LCAX | *LAKE CITY ARMY AMMUNITION PLANT | | | PWRC |
| 33 | LCAX | +LAFARGE CALCIUM ALUMINATES, INC. | | | PWRC |
| 34 | LCAX | LAFARGE CALCIUM ALUMINATES INC | | | SCAC4 |
| 35 | LCB | LC Busre S.A.C. | Callsign: Busre, Founded in 1993. Name changed to LC Busre S.A.C. t/a LC Peru. | PE | AVCODES |
| 36 | LCB | LC Busre S.A.C. t/a LC Peru | IATA: W4, Callsign: Busre, Operations suspended on 25 November 2018 by authorities due no valid insurance. Declared bankrupt 12 December 2018. | PE | AVCODES |
| 37 | LCB | LC Busre | | | ICAO1 |
| 38 | LCBC | LORRAINE CAB COMPANY | | | SCAC3 |
| 39 | LCBC | LCL LINES | | | SCAC4 |
| 40 | LCBG | LAIDLAW CARRIERS BULK GP INC | | | SCAC4 |
| 41 | LCBI | LATHROP, CLAIRE BANDMILL INC | | | SCAC3 |
| 42 | LCBN | LE CIEL BLUE EXPRESS INC | | | SCAC4 |
| 43 | LCBT | LECRENSKI BROS INC | | | SCAC3 |
| 44 | LCBT | LECRENSKI BROS INC | | | SCAC4 |
| 45 | LCBU | LAKE CHELAN BOAT COMPANY | | | SCAC3 |
| 46 | LCC | The Lancair Company | Callsign: Lancair, | USA | AVCODES |
| 47 | LCC | The Lancair Company | | | ICAO1 |
| 48 | LCCA | LE COURTAGE CAN-AM MONTREAL-METROPO | | | SCAC3 |
| 49 | LCCA | LITTLE FARMS TRUCKING INC | | | SCAC4 |
| 50 | LCCC | LENTZ CARRIER COMPANY LLC | | | SCAC4 |
| 51 | LCCD | L C CITY DELIVERY & MOVING | | | SCAC3 |
| 52 | LCCE | Lee County Central Electric | 1/1975-1/1980 | | NAKINA |
| 53 | LCCE | Lee County Central Electric | 1/75-1/80 | | NRHS |
| 54 | LCCE | LEE COUNTY CENTRAL ELECTRIC | | | PWRC |
| 55 | LCCE | Lee County Central Electric | | | RSRV |
| 56 | LCCG | LENS CROWN CARTAGE INC | | | SCAC3 |
| 57 | LCCG | LONGAN CONSTRUCTION COMPANY | | | SCAC4 |
| 58 | LCCI | LOIRE CARBULK CARRIERS, INC | | | SCAC3 |
| 59 | LCCI | LOIGNON CHAMP-CARR INC | | | SCAC4 |
| 60 | LCCL | LONG CREEK COACH LINE | | | SCAC4 |
| 61 | LCCO | LANTER COURIER CORP | | | SCAC3 |
| 62 | LCCO | LILLYPAD COVER COMPANY LTD | | | SCAC4 |
| 63 | LCCP | LANDMARK CONTRACTING CO | | | SCAC4 |
| 64 | LCCQ | LAKE CITY CARTAGE | | | SCAC3 |
| 65 | LCCR | LIMAR CHARTER CORPORATION | | | SCAC4 |
| 66 | LCCT | LANE CONSTRUCTION CORPORATION, THE | | | SCAC4 |
| 67 | LCCU | LEVADA CARGO LLC | | UA | BIC |
| 68 | LCCX | Liquid Carbonic Inc. | added 4/1981; eliminated 1/1992; 1/1994-7/2005 (not listed) | | NAKINA |
| 69 | LCCX | Liquid Carbonic Canada Ltd./Ltee. | added 1/1972; 1/1975-1/1980; eliminated 4/1981 | | NAKINA |
| 70 | LCCX | Liquid Carbonic Canadian Corp., Ltd. | added 4/1969; 4/1970; eliminated 1/1972 | | NAKINA |
| 71 | LCCX | Consolidated Chemical Industries, Inc. | 7/1937-4/1938 | | NAKINA |
| 72 | LCCX | Louisiana Chemical Co., Inc. | 7/1930-7/1935 | | NAKINA |
| 73 | LCCX | Louisiana Chemical Co., Inc. (Consolidated Chemical Industries, Inc.) | Apr-38 | | NRHS |
| 74 | LCCX | Liquid Carbonic Canadian Corp., Ltd. | added 4/69; 4/70; eliminated 1/72 | | NRHS |
| 75 | LCCX | Liquid Carbonic Canada Ltd./Ltee. | added 1/72; 1/75-1/80; eliminated 4/81 | | NRHS |
| 76 | LCCX | Liquid Carbonic Inc. | added 4/81; eliminated 1/92; 1/94-7/2000 | | NRHS |
| 77 | LCCX | *CONSOLIDATED CHEMICAL INDUSTRIES, INC. [LOUISIANA CHEMICAL CO., INC.] | | | PWRC |
| 78 | LCCX | +LIQUID CARBONIC CORP. (LIQUID CARBONIC CANADA LTD.) | | | PWRC |
| 79 | LCCX | Liquid Carbonic Corporation | | | RSRV |
| 80 | LCCX | LIQUID CARBONIC CORPORATION | | | SCAC4 |
| 81 | LCD | Lineas Aereas Azteca, S.A. de C.V. | IATA: ZE, Callsign: Lineas Azteca, IATA Prefix: 994, Operations suspended by the government in March 2007. AOC cancelled in October 2007. | MEX | AVCODES |
| 82 | LCD | Lineas Aereas Azteca | IATA: ZE | | ICAO1 |
| 83 | LCD | | | MEX | TRAFFIC |
| 84 | LCDG | LEHMANS COLD STREAM GARDENS LTD | | | SCAC3 |
| 85 | LCDM | LA COMPAGNIE DE TRANSPORT DE MONTRE | | | SCAC4 |
| 86 | LCDP | LUCAS, DAVID P | | | SCAC3 |
| 87 | LCDT | LA CIE DE TRANSPORT DE BETHIERVILLE | | | SCAC3 |
| 88 | LCDU | LUCIDOL DIV+/PENNWALT CORP | | | SCAC3 |
| 89 | LCE | Lance Aviation | | F | AVCODES |
| 90 | LCEC | LANE COURIER EXPRESS LLC | | | SCAC4 |
| 91 | LCET | LES COURTIERS EN | | | SCAC4 |
| 92 | LCEU | FMC Corp | | | RSRV |
| 93 | LCEX | Lone Star Industries, Inc. | added 7/1981; 1/1994-7/2000; eliminated 1/2001; added 7/2001; 7/2005 | | NAKINA |
| 94 | LCEX | Lindsley Lumber Co. | added 7/1980; eliminated 7/1981 | | NAKINA |
| 95 | LCEX | Lindsley Lumber Co. | added 7/80; eliminated 7/81 | | NRHS |
| 96 | LCEX | Lone Star Industries, Inc. | added 7/81; 1/94-7/2000; eliminated 1/2001; added 7/2001 | | NRHS |
| 97 | LCEX | LONE STAR INDUSTRIES, INC. [LINDSLEY LUMBER CO.] | | | PWRC |
| 98 | LCEX | Lone Star Industries | | | RSRV |
| 99 | LCEX | LONE STAR INDUSTRIES, INC. | | | SCAC4 |
| 100 | LCEZ | LAFARGE CEMENT | | | PWRC |
