| 1 | LIN | Linjeflyg AB | IATA: LF, Callsign: Swedline, Merged into SAS | S | AVCODES |
| 2 | LIN | LINSINGER Maschinenbau GmbH | | AT | VKM |
| 3 | LINA | LINDA CONSTRUCTION INC | | | SCAC4 |
| 4 | LINB | LINDBLAD TRAVEL INC | | | SCAC3 |
| 5 | LINC | Lewis & Clark Ry. Co. | 1/1994; added 4/1995; eliminated 10/1999; 7/2000-7/2005 | | NAKINA |
| 6 | LINC | Lewis & Clark Ry. Co. | 1/94; added 4/95; eliminated 10/99; 7/2000 | | NRHS |
| 7 | LINC | LEWIS & CLARK RAILWAY CO. | | | PWRC |
| 8 | LINC | Lewis and Clark Railway | | | RSRV |
| 9 | LINC | LEWIS & CLARK RAILWAY CO | | | SCAC3 |
| 10 | LINC | LEWIS & CLARK RAILWAY CO | | | SCAC4 |
| 11 | LINCT | Lincoln Transit | | US-NJ | TRAFFIC |
| 12 | LINDE | LINDE TECHNOPLYN a.s. | | CZ | VKM |
| 13 | LINE | LINE & LINE OIL CO | | | SCAC4 |
| 14 | LINE | Line CNM AB | | SE | VKM |
| 15 | LINEAS | Lineas Group SA/NV | Real: LNS | B | TRAFFIC |
| 16 | LING | LINDEN ASSOCIATED GROWERS INC | | | SCAC3 |
| 17 | LING | LINDE | | | SCAC4 |
| 18 | LING | Aer Lingus Teoranta -> Aer Linus Limited | Real: EI | IRL | TRAFFIC |
| 19 | LINH | LIGHTNING FREIGHT INC | | | SCAC4 |
| 20 | LINH | Lindenhurst Bus Company | | USA | TRAFFIC |
| 21 | LINI | LINDEN INDUSTRIAL SERVICE INC | | | SCAC3 |
| 22 | LINI | LINDHAM INDUSTRIES LTD | | | SCAC4 |
| 23 | LINJ | LINK, JACK TRUCK LINE, INC | | | SCAC3 |
| 24 | LINJ | LINK, JACK TRUCK LINE INC | | | SCAC4 |
| 25 | LINK | LINK TRUCKING, INC | | | SCAC3 |
| 26 | LINK | LINK TRUCKING, INC | | | SCAC4 |
| 27 | LINKKR | Link-Bus Kraków | | PL | TRAFFIC |
| 28 | LINL | LINCOLN TRANSPORTATION SERVICES INC | | | SCAC4 |
| 29 | LINN | LINN, JAMES IMPLEMENT | | | SCAC3 |
| 30 | LINN | LINN COOPERATIVE OIL CO | | | SCAC4 |
| 31 | LINO | LIVINGSTON, C E UNION BUS TERMINAL | | | SCAC3 |
| 32 | LINO | LINC ONTARIO LTD | | | SCAC4 |
| 33 | LINP | LINCOLN, L L | | | SCAC3 |
| 34 | LINP | LES INDUSTRIES HARNOIS INC | | | SCAC4 |
| 35 | LINQ | LING TRANSFER | | | SCAC3 |
| 36 | LINQ | LAIMA INC | | | SCAC4 |
| 37 | LINR | LINARES TRANSPORT CORP | | | SCAC4 |
| 38 | LINS | LINDSEY'S EXPRESS, INC | | | SCAC3 |
| 39 | LINT | LINK PETROLEUM SERVICES LTD | | | SCAC4 |
| 40 | LINU | LINDE GMBH, LINDE GAS DEUTSCHLAND | | D | BIC |
| 41 | LINU | Linde AG Geschaftsbereich | | | RSRV |
| 42 | LINU | LINDE GAS PTY. LTD | | | SCAC3 |
| 43 | LINU | LINDE AG GESCHAFTSBEREICH | | | SCAC4 |
| 44 | LINV | LINCOLN VAN & STORAGE CO INC | | | SCAC3 |
| 45 | LINX | General Electric Railcar Services Corp. | added 1/1984; 1/1994; eliminated 10/1994 | | NAKINA |
| 46 | LINX | North American Car Corp. | added 4/1966; 10/1966-1/1980; eliminated 1/1984 | | NAKINA |
| 47 | LINX | North American Car Corp. | added 4/66; 10/66-1/80 | | NRHS |
| 48 | LINX | General Electric Railcar Services Corp. | 1/94; eliminated 10/94 | | NRHS |
| 49 | LINX | (NATX) GENERAL ELECTRIC RAILCAR SERVICES CORP. [NORTH AMERICAN CAR CORP.] | | | PWRC |
| 50 | LINX | GE Railcar Services Corporation | | | RSRV |
| 51 | LINY | LINDSEY TRUCKING & DISTRIBUTION | | | SCAC3 |
| 52 | LINY | LINK LOGISTICS | | | SCAC4 |
| 53 | LINZ | LINGOE ELEVATOR | | | PWRC |
| 54 | LINZ | | City: Linz | A | TRAFFIC |
