| 4101 | LKHA | LIVESTOCK HAULING | | | SCAC3 |
| 4102 | LKHA | LANKHAAR COMPANY | | | SCAC4 |
| 4103 | LKHD | LAKEHEAD PIPE LINE COMPANY INC | | | SCAC3 |
| 4104 | LKHD | LAKEHEAD MOTORS LIMITED, THE | | | SCAC4 |
| 4105 | LKHG | LEAKE, HUGHIE | | | SCAC3 |
| 4106 | LKHO | LAKEHEAD OIL CO INC | | | SCAC4 |
| 4107 | LKHS | LOCKHART, DWIGHT E & COMPANY TRUCKI | | | SCAC4 |
| 4108 | LKHT | LAKEHEAD TRUCKING INC | | | SCAC3 |
| 4109 | LKHT | LUCKHART TRANSPORT LIMITED | | | SCAC4 |
| 4110 | LKIA | LAKIN, A & SONS INC | | | SCAC3 |
| 4111 | LKIC | LAURENTIDE KITCHENS INC | | | SCAC4 |
| 4112 | LKII | L & K INDUSTRIES INC | | | SCAC3 |
| 4113 | LKIS | LARSEN, KNUD I SHIPPING CO | | | SCAC3 |
| 4114 | LKIT | LITTLEFIELD, KIT | | | SCAC3 |
| 4115 | LKJA | LAMBRECHT, K J TRUCKING | | | SCAC4 |
| 4116 | LKJE | LARKIN, JAMES E INC | | | SCAC3 |
| 4117 | LKJE | LESNIAK, JEROME E | | | SCAC4 |
| 4118 | LKJL | LUCKY JULIO S A | | | SCAC4 |
| 4119 | LKJM | L K J ENTERPRISES | | | SCAC3 |
| 4120 | LKJT | LEE, KEN J & SONS TRUCKING | | | SCAC3 |
| 4121 | LKKP | Luka Koper | | BG | VKM |
| 4122 | LKKR | LUCKY K & R | | | SCAC4 |
| 4123 | LKL | Lakeland Aviation | Callsign: Lakeland, | USA | AVCODES |
| 4124 | LKL | Lakeland Aviation | | | ICAO1 |
| 4125 | LKLA | LAKELAND LIQUID TRANSPORTATION LLC | | | SCAC4 |
| 4126 | LKLC | LANDMARK LOGISTICS | | | SCAC4 |
| 4127 | LKLD | LAKE LINE DELIVERIES | | | SCAC3 |
| 4128 | LKLD | LOCK & LOAD TRANSPORTATION | | | SCAC4 |
| 4129 | LKLE | LAKELAWN EXPRESS INC | | | SCAC3 |
| 4130 | LKLM | LAKELAND MOTOR FREIGHT INC | | | SCAC3 |
| 4131 | LKLO | LKL OCEANTRADE INC | | | SCAC4 |
| 4132 | LKLS | LYKES LIVERY SERVICE | | | SCAC3 |
| 4133 | LKLS | LYKES LIVERY SERVICE | | | SCAC4 |
| 4134 | LKLT | LAKELAWN TRANSPORT CORP | | | SCAC3 |
| 4135 | LKLV | L K LIVESTOCK TRANSPORTATION CO | | | SCAC3 |
| 4136 | LKM | Lokomotivbau Karl Marx Babelsberg | | DDR | TRAFFIC |
| 4137 | LKMG | LOCHNERS MOVING INC | | | SCAC3 |
| 4138 | LKMG | LOCHNERS MOVING INC | | | SCAC4 |
| 4139 | LKMI | LAKE MICHIGAN TRUCKING INC | | | SCAC3 |
| 4140 | LKMI | LAKEMOUNT ENTERPRISES INC | | | SCAC4 |
| 4141 | LKMO | LAKEMANOR LEASING | | | SCAC3 |
| 4142 | LKMT | LEMKO TRANS LTD | | | SCAC4 |
| 4143 | LKMU | LAKESPAN MARINE | | | SCAC3 |
| 4144 | LKMU | LAKESPAN MARINE | | | SCAC4 |
| 4145 | LKN | Lankair Private Limited | IATA: IL, Callsign: Lank Air, | CL | AVCODES |
| 4146 | LKN | PT. Nam Air | IATA: IN, Callsign: Namair, Subsidiary of Sriwijaya Air | RI | AVCODES |
| 4147 | LKN | Lankair | IATA: IK | | ICAO1 |
| 4148 | LKNA | LIKE NEW APPLIANCE | | | SCAC3 |
| 4149 | LKNE | LAKIN, ERIC | | | SCAC3 |
| 4150 | LKNS | LEAVER, KENNETH AND SHARON LEAVER | | | SCAC3 |
| 4151 | LKNV | LAKESIDE NAVIGATION CORPORATION | | | SCAC3 |
| 4152 | LKNW | LACKAWANNA PRODUCTS CORP | | | SCAC4 |
| 4153 | LKO | LKO Teknik AB | | SE | VKM |
| 4154 | LKOD | LAKE ODESSA MACHINE PRODUCTS INC | | | SCAC3 |
| 4155 | LKOH | LOOKOUT HOLSTEINS | | | SCAC4 |
| 4156 | LKOL | LOCKEN OIL LLC | | | SCAC4 |
| 4157 | LKOM | L K O TRANSPORT | | | SCAC3 |
| 4158 | LKOT | LOOK OUT TOURS INC | | | SCAC3 |
| 4159 | LKOU | LAKE OIL S L | | | SCAC4 |
| 4160 | LKOW | LUKOWSKI, BILL STEAMSHIP AGENCY INC | | | SCAC3 |
| 4161 | LKP | American Aviation, Inc. | Callsign: Lake Powell, | USA | AVCODES |
| 4162 | LKP | American Aviation | | | ICAO1 |
| 4163 | LKP | LAHAINA KAANAPOLI & PACIFIC (HAWAII) | | | PWRC |
| 4164 | LKPC | LAKELAND OIL CO LLC | | | SCAC4 |
| 4165 | LKPD | LAKESIDE PRODUCE | | | SCAC4 |
| 4166 | LKPK | LANGKOP TRUCKING | | | SCAC4 |
| 4167 | LKPN | LAKEPORT E N E | | | SCAC4 |
| 4168 | LKPQ | LUCKY FRUIT & PRODUCE CO AND LUCKY | | | SCAC3 |
| 4169 | LKPR | LAKESIDE POULTRY RANCH INC | | | SCAC3 |
| 4170 | LKPS | LAKESIDE PRESS, THE | | | SCAC3 |
| 4171 | LKPT | LAKEPORT TRANSFER LTD | | | SCAC3 |
| 4172 | LKPT | LATKO ENTERPRISES LTD | | | SCAC4 |
| 4173 | LKQC | LKQ CORPORATION | | | SCAC4 |
| 4174 | LKQS | LAKE SUPERIOR WAREHOUSING CO. | | | SCAC3 |
| 4175 | LKR | Laker Airways, Inc. | IATA: 6F, Callsign: Laker, Ceased operations | USA | AVCODES |
| 4176 | LKR | Laker Airways | | | ICAO1 |
| 4177 | LKR | LUKOIL ROMANIA SRL | | RO | VKM |
| 4178 | LKRE | LAKER EXPRESS INC | | | SCAC3 |
| 4179 | LKRF | LACKAWANNA REFUSE REMOVAL INC | | | SCAC3 |
| 4180 | LKRG | LAKE REGION TRUCKING | | | SCAC4 |
| 4181 | LKRI | LAKE REGION CO-OP TRANSPORT ASSN | | | SCAC3 |
| 4182 | LKRM | LAKE REGION MOVING & STORAGE CO INC | | | SCAC3 |
| 4183 | LKRR | Little Kanawha River Rail, Inc. | 1/1994-7/2005 | | NAKINA |
| 4184 | LKRR | Little Kanawha River Rail, Inc. | 1/94-7/2000 | | NRHS |
| 4185 | LKRR | LITTLE KANAWHA RIVER RAIL, INC. | | | PWRC |
| 4186 | LKRR | Little Kanawha River Rail | | | RSRV |
| 4187 | LKRR | LITTLE KANAWHA RIVER RAIL INC | | | SCAC3 |
| 4188 | LKRR | LITTLE KANAWHA RIVER RAIL INC | | | SCAC4 |
| 4189 | LKS | Airlink Solutions, S.L. | Callsign: Airlin, | E | AVCODES |
| 4190 | LKS | Airlink Solutions | | | ICAO1 |
| 4191 | LKSA | LAKESIDE TRANSPORTATION CO INC | | | SCAC4 |
| 4192 | LKSB | LOCK, STOCK & BARREL EXPRESS | | | SCAC3 |
| 4193 | LKSC | LINK SHIPPING CORPORATION | | | SCAC3 |
| 4194 | LKSC | LAKESIDE CONSTRUCTION AND SERVICES | | | SCAC4 |
| 4195 | LKSE | LAKESIDE EXPRESS | | | SCAC3 |
| 4196 | LKSF | LAKESHORE FISH MARKET INC | | | SCAC4 |
| 4197 | LKSH | LAKE SHORE TRUCKING CO | | | SCAC3 |
| 4198 | LKSH | LAKESHORE ENTERPRISES | | | SCAC4 |
| 4199 | LKSI | LAKE STATE INDUSTRIES INC | | | SCAC3 |
| 4200 | LKSJ | Landskrona - Kävlinge - Sjöbo Järnväg | 1906 - 1926 | S | svenska-lok.se |
