| 1 | LT | LTU International Airways | ICAO: LTU, Callsign: LTU, IATA Prefix: 266, Merged into Air Berlin w.e.f. 13 October 2009. | D | AVCODES |
| 2 | LT | Air Lituancia | ICAO: LTU, Callsign: Lithunica, IATA Prefix: 431, Founded in May 2013. Ceased operations on 22 May 2015. | LT | AVCODES |
| 3 | LT | LongJiang Airlines Co., Ltd. | ICAO: SNG, Callsign: Snow Eagle, IATA Prefix: 867, | PRC | AVCODES |
| 4 | LT | Lake Terminal R.R. Co. | 8/1920-7/2005 | | NAKINA |
| 5 | LT | Lake Terminal R.R. Co. | 4/38-7/2000 | | NRHS |
| 6 | LT | LAKE TERMINAL RAILROAD CO. | | | PWRC |
| 7 | LT | Lake Terminal Railroad | | | RSRV |
| 8 | LT | LAKE TERMINAL RAILROAD COMPANY, THE | | | SCAC4 |
| 9 | LT | London Transport | City: London | GB | TRAFFIC |
| 10 | LTA | Trans Atlantis | Callsign: Lantra, | CDN | AVCODES |
| 11 | LTA | Leadership In Flight Training, LLC d/b/a LIFT Academy | Callsign: Lift, | USA | AVCODES |
| 12 | LTA | S.C. Starlight Airlines S.r.l. | Callsign: Lightstar, Operators licence revoked w.e.f. 10 Febraury 2012. | BG | AVCODES |
| 13 | LTA | Trans Atlantis | | | ICAO1 |
| 14 | LTA | Landesmuseum für Technik und Arbeit | Mannheim | D | privat-bahn.de |
| 15 | LTAA | LIZMARK TRANSPORT SERVICES INC | | | SCAC4 |
| 16 | LTAB | L T A BROS | | | SCAC4 |
| 17 | LTAB | Landeryds Trafik AB | | SE | VKM |
| 18 | LTAC | LET IT RIDE TRANSPORTATION INC | | | SCAC4 |
| 19 | LTAD | LANDRUM TRANSPORTATION | | | SCAC4 |
| 20 | LTAF | LAMB TRANSPORTATION SERVICES | | | SCAC4 |
| 21 | LTAG | LTA GROUP INC | | | SCAC3 |
| 22 | LTAG | LONGBOW TRANSPORTATION AND LOGISTIC | | | SCAC4 |
| 23 | LTAI | LEWIS TRANSPORTATION INC | | | SCAC3 |
| 24 | LTAJ | LEIGHTON TRANSPORT LLC | | | SCAC4 |
| 25 | LTAL | LUCAS TRUCKING & LEASING INC | | | SCAC3 |
| 26 | LTAL | LUCAS TRUCKING & LEASING INC | | | SCAC4 |
| 27 | LTAM | LEISURE TIME ACTIVITIES | | | SCAC4 |
| 28 | LTAN | LASER TRANSPORT INC | | | SCAC3 |
| 29 | LTAN | LASER TRANSPORT INC | | | SCAC4 |
| 30 | LTAO | LANDAIR TRANSPORT INC | | | SCAC3 |
| 31 | LTAO | LANDAIR TRANSPORT INC | | | SCAC4 |
| 32 | LTAP | LOPEZ TRUCKING INC | | | SCAC4 |
| 33 | LTAR | LODESTAR TRANSPORT SERVICES LLC | | | SCAC4 |
| 34 | LTAR | Arriva | City: London | GB | TRAFFIC |
| 35 | LTAS | LEWIS TRANSFER AND STORAGE CO INC | | | SCAC3 |
| 36 | LTAT | LITTLE A TRUCKING INC | | | SCAC4 |
| 37 | LTAT | Atlas Bus | | GB | TRAFFIC |
| 38 | LTAV | Alder Valley | | GB | TRAFFIC |
| 39 | LTAY | LADY | | | SCAC4 |
| 40 | LTB | Baltic Express Line | Callsign: Sky Bel, | LV | AVCODES |
| 41 | LTB | LOKO TRANS s.r.o. | | CZ | VKM |
| 42 | LTBC | LITBEC TRANSPORT INC | | | SCAC3 |
| 43 | LTBC | LITBEC INC | | | SCAC4 |
| 44 | LTBCZ | LOKO TRANS s.r.o. - organinisačná zloška | | SK | VKM |
| 45 | LTBF | LIMA TRANSPORT LLC | | | SCAC4 |
| 46 | LTBI | L T BROKERAGE INC | | | SCAC3 |
| 47 | LTBI | L T BROKERAGE INC | | | SCAC4 |
| 48 | LTBJ | LEVARI TRUCKING CO LLC | | | SCAC4 |
| 49 | LTBK | LEE TRUCK BROKER INC | | | SCAC3 |
| 50 | LTBL | LARSEN & TOUBRO LIMITED | | | SCAC3 |
| 51 | LTBL | LES TRANSPORTS J S BELOIN INC | | | SCAC4 |
| 52 | LTBM | L THREE (L3) ENTERPRISES | | | SCAC4 |
| 53 | LTBN | LEE TRUCK BROKER INC | | | SCAC4 |
| 54 | LTBP | LARRY TRUCKING CORPORATION | | | SCAC4 |
| 55 | LTBQ | LIBERTY TRANSPORT SERVICES LLC | | | SCAC4 |
| 56 | LTBS | LITTLE TRAVERSE BAY SCENIC RAILROAD | | | PWRC |
| 57 | LTBS | LEISURE TRAVEL BUS SERVICE | | | SCAC3 |
| 58 | LTBS | L T I | | | SCAC4 |
| 59 | LTBT | Blue Triangle | | GB | TRAFFIC |
| 60 | LTBU | IBERIA CRANES & CONTAINER, SL | | E | BIC |
| 61 | LTBU | CONTAINER LOGISTIC AND TRADING | | | SCAC4 |
| 62 | LTBU | London Buses | | GB | TRAFFIC |
| 63 | LTBY | LINDSEY TRUCKING | | | SCAC4 |
| 64 | LTC | Latcharter | IATA: 6Y, Callsign: Latcharter, Name changed to Smartlynx Airlines | LV | AVCODES |
| 65 | LTC | Smartlynx Airlines | IATA: 6Y, Callsign: Latcharter, ICAO Designator changed to ART. ICAO callsign changed to Smart Lynx. Name changed from Latcharter | LV | AVCODES |
| 66 | LTC | Latin Carga, Latinoamericana Aera de Carga | Callsign: Latincarga, | YV | AVCODES |
| 67 | LTC | Charter JETS, UAB | Callsign: Charter Jets, | LT | AVCODES |
| 68 | LTC | LatCharter | | | ICAO1 |
| 69 | LTC | Lafferty Transportation | 1/1975-1/1980 | | NAKINA |
| 70 | LTC | Lafferty Transportation | 1/75-1/80 | | NRHS |
| 71 | LTC | *LAFFERTY TRANSPORTATION CO. | | | PWRC |
| 72 | LTC | *LITHCOTE | | | PWRC |
| 73 | LTC | Lafferty Transportation | | | RSRV |
| 74 | LTC | Let's Train Connect | | | TRAFFIC |
| 75 | LTCA | LUXURY TRAVEL COACH LTD | | | SCAC3 |
| 76 | LTCB | LINCOLN TRUCKING CO INC | | | SCAC3 |
| 77 | LTCB | LINCOLN TRUCKING COMPANY | | | SCAC4 |
| 78 | LTCC | LTC TRUCKING COMPANY, INC | | | SCAC3 |
| 79 | LTCC | LAUDERDALE TRUCKING INC | | | SCAC4 |
| 80 | LTCC | Capital Citybus | | GB | TRAFFIC |
| 81 | LTCD | LEE, T C DISTRIBUTORS INC | | | SCAC3 |
| 82 | LTCD | LANE, TOM CREEK SIDE BELGIANS | | | SCAC4 |
| 83 | LTCE | LIBERTY TOURS & CHARTERS INC | | | SCAC3 |
| 84 | LTCE | LOGISTICA Y TRANSPORTADORA INTERNAC | | | SCAC4 |
| 85 | LTCE | London Central | | GB | TRAFFIC |
| 86 | LTCF | LETICA FREIGHT LINES | | | SCAC3 |
| 87 | LTCG | L/T CARTAGE INC | | | SCAC3 |
| 88 | LTCG | LINDER, TRENTON CARTAGE | | | SCAC4 |
| 89 | LTCH | LTC | | | SCAC4 |
| 90 | LTCJ | LTC TRANSPORT CO LTD | | | SCAC3 |
| 91 | LTCK | LTC TRANSPORT INC | | | SCAC3 |
| 92 | LTCL | LOMAK TRANSPORT CORP LTD | | | SCAC3 |
| 93 | LTCM | LANCE TRUCKING COMPANY | | | SCAC3 |
| 94 | LTCM | LANCE TRUCKING COMPANY | | | SCAC4 |
| 95 | LTCN | LTC FREIGHT (DIVISION OF LIQUID TRA | | | SCAC3 |
| 96 | LTCO | Lakeside Transportation, L.L.C. | added 7/1994; eliminated 4/1995; eliminated 7/1995 | | NAKINA |
| 97 | LTCO | Lakeside Transportation Co. | added 4/1994; eliminated 7/1994 | | NAKINA |
| 98 | LTCO | Lakeside Transportation Co. | added 4/94; eliminated 7/94 | | NRHS |
| 99 | LTCO | Lakeside Transportation, L.L.C. | added 7/94; eliminated 4/95; eliminated 7/95 | | NRHS |
| 100 | LTCO | LAKESIDE TRANSPORTATION, L.L.C. | | | PWRC |
