| 1 | LCI | Lufthansa Cargo (India) | IATA: LF, Callsign: Lufthansa India, Designator LF* recalled by IATA | IND | AVCODES |
| 2 | LCI | Lotsiya, Branch Airline Company, Smilyanske Agricultural Company with Limited Liability | Callsign: Lotsiya, | UA | AVCODES |
| 3 | LCI | Lao Central Airlines Public Co., Ltd | IATA: LF, Callsign: Lao Central, IATA Prefix: 971, Designator LF recalled by IATA. Founded in 2010 | LAO | AVCODES |
| 4 | LCIB | LEGACY CABINETS INC | | | SCAC4 |
| 5 | LCIC | LOGISTIQUES CONOVA INC | | | SCAC4 |
| 6 | LCIE | L C I EQUIPMENTS INC | | | SCAC4 |
| 7 | LCIF | LAND CARGO INC | | | SCAC4 |
| 8 | LCIL | LUXURY COACHES INTERNATIONAL LTD | | | SCAC3 |
| 9 | LCIM | LEWIS CREEK INSTRUMENTS | | | SCAC4 |
| 10 | LCIO | LATEC INSTRUMENTS INC | | | SCAC4 |
| 11 | LCIQ | LIQUID CARRIERS INCORPORATED | | | SCAC3 |
| 12 | LCIT | LAKE CENTER TRANSPORTATION INC | | | SCAC3 |
| 13 | LCIT | LAKE CENTER INDUSTRIES TRANSPORTATI | | | SCAC4 |
| 14 | LCIT | LocoItalia Srl | | I | TRAFFIC |
| 15 | LCITY | City Bus Company | City: London | GB | TRAFFIC |
| 16 | LCIU | HEXAGON LINCOLN | | USA | BIC |
| 17 | LCIU | Hexagon Lincoln | | | RSRV |
| 18 | LCIX | Praxair, Inc. | added 1/1997; 7/2000-7/2005 | | NAKINA |
| 19 | LCIX | Liquid Carbonic Corp. | added 7/1969; 4/1970-1/1994; eliminated 1/1997 | | NAKINA |
| 20 | LCIX | General Dynamics Corp., Liquid Carbonic Division | added 4/1959; 4/1961-10/1966; eliminated 7/1969 | | NAKINA |
| 21 | LCIX | Liquid Carbonic Corp., Division of General Dynamics Corp. | added 1/1958; eliminated 4/1959 | | NAKINA |
| 22 | LCIX | Liquid Carbonic Corp. | 7/1935-10/1957; eliminated 1/1958 | | NAKINA |
| 23 | LCIX | Liquid Carbonic Corp. | 4/38-10/57; eliminated 1/58 | | NRHS |
| 24 | LCIX | Liquid Carbonic Corp., Division of General Dynamics Corp. | added 1/58 | | NRHS |
| 25 | LCIX | General Dynamics Corp., Liquid Carbonic Division | 4/61-10/66; eliminated 7/69 | | NRHS |
| 26 | LCIX | Liquid Carbonic Corp. | added 7/69; 4/70-1/94; eliminated 1/97 | | NRHS |
| 27 | LCIX | Praxair, Inc. | added 1/97; 7/2000 | | NRHS |
| 28 | LCIX | PRAXAIR INCORPORATED (LIQUID CARBONIC CORP.) | | | PWRC |
| 29 | LCIX | Liquid Carbonic Corporation, Praxair | | | RSRV |
| 30 | LCIY | LINES CARRIER INC | | | SCAC4 |