| 7701 | LTSA | LOTSA TRANSPORT INC | | | SCAC4 |
| 7702 | LTSB | L T'S BROKERAGE | | | SCAC3 |
| 7703 | LTSB | LOKOTRANS SERVIS s.r.o. | | CZ | VKM |
| 7704 | LTSC | LTS SHIPPING CORP | | | SCAC4 |
| 7705 | LTSE | LITTLESTONE SHIPPING INC. | | | SCAC3 |
| 7706 | LTSG | LEWIS TRANSFER & STORAGE | | | SCAC3 |
| 7707 | LTSG | LINE TRUCKING SERVICES | | | SCAC4 |
| 7708 | LTSH | LTL SERVICES | | | SCAC3 |
| 7709 | LTSI | LYNN TRANSPORTATION SYSTEMS INC | | | SCAC3 |
| 7710 | LTSJ | LIST TRUCKING & SALES INC | | | SCAC4 |
| 7711 | LTSL | LANSING TRANSPORTATION SERVICES LLC | | | SCAC4 |
| 7712 | LTSL | LTS Logistik, s.r.o. | | SK | VKM |
| 7713 | LTSM | LOGISTICS & TRANSPORTATION SERVICES | | | SCAC3 |
| 7714 | LTSM | LOGISTICS & TRANSPORTATION SERVICES | | | SCAC4 |
| 7715 | LTSN | LAIDLAW TRANSIT (NY) INC | | | SCAC3 |
| 7716 | LTSO | LASSEN TRANSFER & STORAGE | | | SCAC3 |
| 7717 | LTSO | LASSEN TRANSFER & STORAGE | | | SCAC4 |
| 7718 | LTSP | LAND TRANSP | | | SCAC4 |
| 7719 | LTSQ | LYNCH TRUCK SERVICE INC | | | SCAC3 |
| 7720 | LTSR | LTS RENTALS | | | SCAC3 |
| 7721 | LTSR | LOTUS TRANSPORT INC | | | SCAC4 |
| 7722 | LTST | LES TRANSPORTS SIMON THERIAULT INC | | | SCAC4 |
| 7723 | LTSU | LOGICSHIPPINGTRADING APS | | DK | BIC |
| 7724 | LTSV | LEE TRANSPORTATION SERVICES INC | | | SCAC3 |
| 7725 | LTSW | LADONS TRANSPORT SERVICE INC | | | SCAC4 |
| 7726 | LTSY | LONGSHORE TRANSPORTATION SYSTEMS IN | | | SCAC3 |
| 7727 | LTT | Baltijas Aviacijas Sistemas | Callsign: Litcom, | LT | AVCODES |
| 7728 | LTTA | L T C TRANSPORT CO LTD | | | SCAC4 |
| 7729 | LTTC | LIGHT TRUCKING CORP | | | SCAC3 |
| 7730 | LTTC | LIGHT TRUCKING CORP | | | SCAC4 |
| 7731 | LTTD | LETHBRIDGE TRUCK TERMINALS (1989) L | | | SCAC4 |
| 7732 | LTTF | LITTELFUSE S A DE C V (MX-449486) | | | SCAC4 |
| 7733 | LTTG | LITTLE TRUCKING | | | SCAC3 |
| 7734 | LTTG | LOONEY TOON TRUCKING | | | SCAC4 |
| 7735 | LTTI | L-T TRANSPORT INC | | | SCAC3 |
| 7736 | LTTK | LUCAS, TOMMY TRUCK LINE INC | | | SCAC3 |
| 7737 | LTTK | LITTLE KERY | | | SCAC4 |
| 7738 | LTTL | LOU-TEX TRUCK LEASING INC | | | SCAC3 |
| 7739 | LTTL | LITTLETON, JERRY TRACKING LLC | | | SCAC4 |
| 7740 | LTTM | LAWSON, TRE TRUCKING LLC | | | SCAC4 |
| 7741 | LTTN | LIBERIAN TITAN TRANSPORTS, INC. | | | SCAC3 |
| 7742 | LTTN | LITTLE TRUCKING INC | | | SCAC4 |
| 7743 | LTTP | LITTLE TRUCK SOLUTIONS INC | | | SCAC4 |
| 7744 | LTTR | LUTTRELL TRUCKING | | | SCAC3 |
| 7745 | LTTR | L & T TRUCKING INC | | | SCAC4 |
| 7746 | LTTT | LTT TRUCKING LLC | | | SCAC4 |
| 7747 | LTTU | MAS LOGISTICS | | | SCAC4 |
| 7748 | LTTV | LIBERTY TRAVEL | | | SCAC3 |
| 7749 | LTTV | LOGIS TRANSPORTES TERRESTRES SA DE | | | SCAC4 |
| 7750 | LTTW | L & T TRANSPORT | | | SCAC4 |
| 7751 | LTTX | TTX Co. | added 1/1992; 1/1994-7/2005 | | NAKINA |
| 7752 | LTTX | Trailer Train Co. | added 7/1964; 7/1965-1/1980; eliminated 1/1992 | | NAKINA |
| 7753 | LTTX | Trailer Train Co. | added 7/1964 | | NAKINA |
| 7754 | LTTX | Trailer Train Co. (FC low deck height flat cars equipped with hitches, bridge plates and safety chains for the transportation of trailers) | 7/1965 | | NAKINA |
| 7755 | LTTX | Trailer Train Co. (FC low deck height flat cars equipped with hitches and bridge plates for the transportation of trailers) | 10/1966-10/1968 | | NAKINA |
| 7756 | LTTX | Trailer Train Co. (low deck flat cars, equipped with hitches and bridge plates) | 4/1970-1/1980 | | NAKINA |
| 7757 | LTTX | Trailer Train Co. (low deck flat cars, equipped with collapsable hitches and bridge plates) | 7/1985 | | NAKINA |
| 7758 | LTTX | Trailer Train Co./TTX Co. (low deck flat cars, equipped with collapsable hitches and bridge plates for transporting trailers) | 10/1991-1/1994 | | NAKINA |
| 7759 | LTTX | TTX Co. (undefined) | 7/2000 | | NAKINA |
| 7760 | LTTX | Trailer Train Co. | added 7/64; 7/65 | | NRHS |
| 7761 | LTTX | Trailer Train Co. (FC low deck height flat cars equipped with hitches and bridge plates for the transportation of trailers) | 10/66-10/68 | | NRHS |
| 7762 | LTTX | Trailer Train Co. | Apr-70 | | NRHS |
| 7763 | LTTX | Trailer Train Co. (low deck flat cars, equipped with hitches and bridge plates) | 1/75-1/80 | | NRHS |
| 7764 | LTTX | Trailer Train Co. | eliminated 1/92 | | NRHS |
| 7765 | LTTX | TTX Co. | added 1/92 | | NRHS |
| 7766 | LTTX | TTX Co. (low deck flat cars, equipped with collapsable hitches and bridge plates for transporting trailers) | Jan-94 | | NRHS |
| 7767 | LTTX | TTX Co. (undefined) | Jul-00 | | NRHS |
| 7768 | LTTX | TTX COMPANY | | | PWRC |
| 7769 | LTTX | Trailer Train (TTX Corporation) | | | RSRV |
| 7770 | LTTX | TTX COMPANY | | | SCAC4 |
| 7771 | LTTY | LEWIS, TERRY TRUCKING CO | | | SCAC4 |
| 7772 | LTU | LTU International Airways | IATA: LT, Callsign: LTU, IATA Prefix: 266, Merged into Air Berlin w.e.f. 13 October 2009. | D | AVCODES |
| 7773 | LTU | Air Lituancia | IATA: LT, Callsign: Lithunica, IATA Prefix: 431, Founded in May 2013. Ceased operations on 22 May 2015. | LT | AVCODES |
| 7774 | LTU | LTU International | IATA: LT | | ICAO1 |
| 7775 | LTU | LTU | | CH | TRAFFIC |
| 7776 | LTUI | LEISURE TIME UNLIMITED INC | | | SCAC3 |
| 7777 | LTUK | LEONARD TRUCKING | | | SCAC3 |
| 7778 | LTUL | LURAE TRUCK LINE INC | | | SCAC3 |
| 7779 | LTUN | LAN TRUCKING INC | | | SCAC3 |
| 7780 | LTUS | LOTUS INTERMODAL INC | | | SCAC4 |
| 7781 | LTUU | LITHUANIAN ARMED FORCES LOGISTICS SUPPORT COMMAND | | LT | BIC |
| 7782 | LTUU | LIETUVOS KARIUOMENE | | | SCAC4 |
| 7783 | LTVA | LILLY TRUCKING OF VIRGINIA INC | | | SCAC3 |
| 7784 | LTVA | LILLY TRUCKING OF VIRGINIA INC | | | SCAC4 |
| 7785 | LTVI | LTV INTERNATIONAL REMOVALS | | | SCAC4 |
| 7786 | LTVK | LEISURE TRAVEL OF KALAMAZOO INC | | | SCAC3 |
| 7787 | LTVL | LIFECO SERVICES CORPORATION | | | SCAC3 |
| 7788 | LTVQ | LITTLE VALLEY QUARTER HORSES | | | SCAC4 |
| 7789 | LTVS | L T V STEEL CO | | | SCAC3 |
| 7790 | LTVT | LES TRANSPORT VARI-TRANS INC | | | SCAC4 |
| 7791 | LTVX | LTV Steel Co. | added 10/1985; eliminated 7/1986; 1/1994-7/2005 (not listed) | | NAKINA |
| 7792 | LTVX | LTV Steel Co. | eliminated 7/86; 1/94-7/2000 | | NRHS |
| 7793 | LTVX | *LTV STEEL COMPANY (LTV MINING CO.) | | | PWRC |
| 7794 | LTVX | +CLIFFS ERIE LLC | | | PWRC |
| 7795 | LTVX | LTV Steel | | | RSRV |
| 7796 | LTVX | LTV Steel Co. | | USA | TRAFFIC |
| 7797 | LTW | Luchtvaartmaatschappii Twente, N.V. | Callsign: Twentair, Ceased operations. | NL | AVCODES |
| 7798 | LTW | Luchtvaartmaatschappij Twente | | | ICAO1 |
| 7799 | LTWC | L TWO (L2) INDUSTRIES INC | | | SCAC4 |
| 7800 | LTWG | LARRYS TRUCKING & WAREHOUSING INC | | | SCAC4 |
