| 7201 | LSTZ | LANDSTAR SYSTEM INC & ITS WHOLLY OW | | | SCAC4 |
| 7202 | LSU | Laus | Callsign: Laus Air, | HR | AVCODES |
| 7203 | LSU | Laus | | | ICAO1 |
| 7204 | LSUE | LEISURE TIME TOURS | | | SCAC3 |
| 7205 | LSUN | LONE STAR TRUCKING INC | | | SCAC4 |
| 7206 | LSUS | LOS SUENOS | | | SCAC4 |
| 7207 | LSUT | LEISURE TOURS | | | SCAC3 |
| 7208 | LSV | Alak | Callsign: Alasov, | RUS | AVCODES |
| 7209 | LSV | Slovenian Ministry of Defence | Callsign: Slovenian Airforce, | SK | AVCODES |
| 7210 | LSVA | LUCIA SPECIALIZED HAULING OF VA INC | | | SCAC4 |
| 7211 | LSVC | LUCKY SEVEN (LUCKY 7) CATTLE CO | | | SCAC3 |
| 7212 | LSVG | LONDON SALVAGE & TRADING CO LTD | | | SCAC4 |
| 7213 | LSVI | LOCOMOTIVE SERVICE INC | | | SCAC4 |
| 7214 | LSVK | LUCKY SEVEN (7) TRUCKING LLC | | | SCAC4 |
| 7215 | LSVL | LASER SERVICES LTD | | | SCAC3 |
| 7216 | LSVN | LONE STAR VAN LINES INC | | | SCAC3 |
| 7217 | LSVN | LONE STAR VAN LINES INC | | | SCAC4 |
| 7218 | LSVT | LAS VEGAS TOWING CORPORATION | | | SCAC3 |
| 7219 | LSVU | ZTMC LTD. | | UA | BIC |
| 7220 | LSVW | LONE STAR TRANSPORT | | | SCAC3 |
| 7221 | LSVW | LONE STAR TRANSPORT | | | SCAC4 |
| 7222 | LSVX | LOCOMOTIVE SERVICE INC | | | SCAC4 |
| 7223 | LSWA | LEWIS, WAYNE | | | SCAC4 |
| 7224 | LSWF | LEO'S TRUCKING OF SWFL INC | | | SCAC4 |
| 7225 | LSWI | LSW INDUSTRIES INC | | | SCAC3 |
| 7226 | LSWK | LEE'S WELDING INC | | | SCAC4 |
| 7227 | LSWN | LONE STAR WAREHOUSE INC | | | SCAC4 |
| 7228 | LSWQ | LEASEWAY TRUCKING, INC | | | SCAC3 |
| 7229 | LSWQ | LEASEWAY TRUCKING INC | | | SCAC4 |
| 7230 | LSWR | London & South Western Railway | | GB | TRAFFIC |
| 7231 | LSWS | LUCHINI TRANSPORT SERVICE | | | SCAC3 |
| 7232 | LSWW | LAST WAGON WEST | | | SCAC3 |
| 7233 | LSX | Atlas Executive Air, S.A. | Callsign: Atlas Exec, | E | AVCODES |
| 7234 | LSX | C.C. Lang & Son Inc. | 1/1941-7/1954; eliminated 4/1956 | | NAKINA |
| 7235 | LSX | Lackawanna Steel Co. (Bethlehem Steel Co.) | 7/1923 | | NAKINA |
| 7236 | LSX | Lackawanna Steel Co. | 8/1920 | | NAKINA |
| 7237 | LSX | C.C. Lang & Son Inc. | Jan-52 | | NRHS |
| 7238 | LSX | *BETHLEHEM STEEL CO. {LACKAWANNA STEEL CO.] | | | PWRC |
| 7239 | LSX | *C.C. LANG & SON INC. | | | PWRC |
| 7240 | LSX | *LUZERNE & SUSQUEHANNA RAILWAY CO. | | | PWRC |
| 7241 | LSXA | LES TRANSPORTS A T D INC | | | SCAC4 |
| 7242 | LSXB | LASER TRANSPORT LLC | | | SCAC4 |
| 7243 | LSXC | L & S TRANSPORT INC | | | SCAC4 |
| 7244 | LSXD | LST EXPRESS LTD | | | SCAC4 |
| 7245 | LSXE | LASER EXPEDITED TRANSPORTATION (THE | | | SCAC4 |
| 7246 | LSXI | LAKESIDE EXPRESS INC | | | SCAC3 |
| 7247 | LSXK | LISA'S TRANSPORT TRUCKING INC | | | SCAC4 |
| 7248 | LSXO | LASA TRANSPORT | | | SCAC4 |
| 7249 | LSXP | LASER EXPRESS INC | | | SCAC3 |
| 7250 | LSXT | LITOS TRANSPORT | | | SCAC4 |
| 7251 | LSXX | LOCOMOTIVE SALES 7 LEASING CORP. | | | PWRC |
| 7252 | LSXX | LOCOMOTIVE SALES AND LEASING CORPOR | | | SCAC4 |
| 7253 | LSY | Lindsay Aviation, Inc. | Callsign: Lindsay Air, | USA | AVCODES |
| 7254 | LSY | Lebanon Sky Aviation | Callsign: Lebanon Sky, AOC revoked by Lebanese Directorate General of Civil Aviation on 23 November 2016. | RL | AVCODES |
| 7255 | LSY | Lindsay Aviation | | | ICAO1 |
| 7256 | LSYL | LEESYL TRANSPORT CO | | | SCAC3 |
| 7257 | LSYS | LABEL SYSTEMS | | | SCAC4 |
| 7258 | LSZR | LEISZLER TRANSPORT SERVICE INC | | | SCAC4 |
| 7259 | LT | LTU International Airways | ICAO: LTU, Callsign: LTU, IATA Prefix: 266, Merged into Air Berlin w.e.f. 13 October 2009. | D | AVCODES |
| 7260 | LT | Air Lituancia | ICAO: LTU, Callsign: Lithunica, IATA Prefix: 431, Founded in May 2013. Ceased operations on 22 May 2015. | LT | AVCODES |
| 7261 | LT | LongJiang Airlines Co., Ltd. | ICAO: SNG, Callsign: Snow Eagle, IATA Prefix: 867, | PRC | AVCODES |
| 7262 | LT | Lake Terminal R.R. Co. | 8/1920-7/2005 | | NAKINA |
| 7263 | LT | Lake Terminal R.R. Co. | 4/38-7/2000 | | NRHS |
| 7264 | LT | LAKE TERMINAL RAILROAD CO. | | | PWRC |
| 7265 | LT | Lake Terminal Railroad | | | RSRV |
| 7266 | LT | LAKE TERMINAL RAILROAD COMPANY, THE | | | SCAC4 |
| 7267 | LT | London Transport | City: London | GB | TRAFFIC |
| 7268 | LTA | Trans Atlantis | Callsign: Lantra, | CDN | AVCODES |
| 7269 | LTA | Leadership In Flight Training, LLC d/b/a LIFT Academy | Callsign: Lift, | USA | AVCODES |
| 7270 | LTA | S.C. Starlight Airlines S.r.l. | Callsign: Lightstar, Operators licence revoked w.e.f. 10 Febraury 2012. | BG | AVCODES |
| 7271 | LTA | Trans Atlantis | | | ICAO1 |
| 7272 | LTA | Landesmuseum für Technik und Arbeit | Mannheim | D | privat-bahn.de |
| 7273 | LTAA | LIZMARK TRANSPORT SERVICES INC | | | SCAC4 |
| 7274 | LTAB | L T A BROS | | | SCAC4 |
| 7275 | LTAB | Landeryds Trafik AB | | SE | VKM |
| 7276 | LTAC | LET IT RIDE TRANSPORTATION INC | | | SCAC4 |
| 7277 | LTAD | LANDRUM TRANSPORTATION | | | SCAC4 |
| 7278 | LTAF | LAMB TRANSPORTATION SERVICES | | | SCAC4 |
| 7279 | LTAG | LTA GROUP INC | | | SCAC3 |
| 7280 | LTAG | LONGBOW TRANSPORTATION AND LOGISTIC | | | SCAC4 |
| 7281 | LTAI | LEWIS TRANSPORTATION INC | | | SCAC3 |
| 7282 | LTAJ | LEIGHTON TRANSPORT LLC | | | SCAC4 |
| 7283 | LTAL | LUCAS TRUCKING & LEASING INC | | | SCAC3 |
| 7284 | LTAL | LUCAS TRUCKING & LEASING INC | | | SCAC4 |
| 7285 | LTAM | LEISURE TIME ACTIVITIES | | | SCAC4 |
| 7286 | LTAN | LASER TRANSPORT INC | | | SCAC3 |
| 7287 | LTAN | LASER TRANSPORT INC | | | SCAC4 |
| 7288 | LTAO | LANDAIR TRANSPORT INC | | | SCAC3 |
| 7289 | LTAO | LANDAIR TRANSPORT INC | | | SCAC4 |
| 7290 | LTAP | LOPEZ TRUCKING INC | | | SCAC4 |
| 7291 | LTAR | LODESTAR TRANSPORT SERVICES LLC | | | SCAC4 |
| 7292 | LTAR | Arriva | City: London | GB | TRAFFIC |
| 7293 | LTAS | LEWIS TRANSFER AND STORAGE CO INC | | | SCAC3 |
| 7294 | LTAT | LITTLE A TRUCKING INC | | | SCAC4 |
| 7295 | LTAT | Atlas Bus | | GB | TRAFFIC |
| 7296 | LTAV | Alder Valley | | GB | TRAFFIC |
| 7297 | LTAY | LADY | | | SCAC4 |
| 7298 | LTB | Baltic Express Line | Callsign: Sky Bel, | LV | AVCODES |
| 7299 | LTB | LOKO TRANS s.r.o. | | CZ | VKM |
| 7300 | LTBC | LITBEC TRANSPORT INC | | | SCAC3 |
