| 1 | HTC | Haiti Trans Air, S.A. | Callsign: Haiti Transair, | RH | AVCODES |
| 2 | HTC | Haiti Trans Air, S.A. | IATA: TV, Callsign: Haiti Transair, Designator TV recalled by IATA | RH | AVCODES |
| 3 | HTC | Haiti Trans Air | | | ICAO1 |
| 4 | HTC | Houston & Texas Central | | USA | TRAFFIC |
| 5 | HTCD | HATCHER DAIRY FARM | | | SCAC4 |
| 6 | HTCE | H T C EXPRESS INC | | | SCAC4 |
| 7 | HTCG | HERRERA TRUCKING | | | SCAC4 |
| 8 | HTCH | HATCHER TRUCKING COMPANY | | | SCAC1 |
| 9 | HTCH | HATCHER TRUCKING COMPANY, INCORPORA | | | SCAC4 |
| 10 | HTCI | HUTCHCRAFT VAN SVC INC | | | SCAC4 |
| 11 | HTCJ | HEWITT TRUCKING COMPANY | | | SCAC4 |
| 12 | HTCL | HODGE TRUCKING CO INC | | | SCAC4 |
| 13 | HTCM | H2O COMPOSITES INC | | | SCAC4 |
| 14 | HTCN | HTC TRUCKING LLC | | | SCAC4 |
| 15 | HTCO | HETCO MOVING SYSTEMS INC | | | SCAC4 |
| 16 | HTCP | H T C | | | SCAC4 |
| 17 | HTCR | HURMAN TRUCKING COMPANY | | | SCAC4 |
| 18 | HTCU | HALDOR TOPSOE A/S | | DK | BIC |
| 19 | HTCU | HALDOR TOPSOE A/S | | | SCAC4 |
| 20 | HTCV | HELLENIC TANKERS CO LTD | | | SCAC4 |
| 21 | HTCW | HUTCHISON TRUCKING INC | | | SCAC4 |
| 22 | HTCX | General Electric Rail Services Corp. | added 1/2000; 7/2000-7/2005 | | NAKINA |
| 23 | HTCX | General Electric Railcar Services Corp. | added 1/1994; eliminated 1/2000 | | NAKINA |
| 24 | HTCX | Chrysler Rail Transportation Corp. | added 4/1991; eliminated 1/1994 | | NAKINA |
| 25 | HTCX | Transportation Corp. of America | added 4/1974; 1/1975-1/1980; eliminated 4/1991 | | NAKINA |
| 26 | HTCX | Arthur Equipment Co. | added 10/1971; eliminated 4/1974 | | NAKINA |
| 27 | HTCX | Harbor Tank Line Co. | 7/1935-4/1970; eliminated 10/1971 | | NAKINA |
| 28 | HTCX | Haffner Thrall Car Co. (Harbor Tank Line Co.) | 7/1930-7/1932 | | NAKINA |
| 29 | HTCX | Harbor Tank Line Co. | 4/38-4/70; eliminated 10/71 | | NRHS |
| 30 | HTCX | Arthur Equipment Co. | added 10/71 | | NRHS |
| 31 | HTCX | Transportation Corp. of America | 1/75-1/80; eliminated 4/91 | | NRHS |
| 32 | HTCX | Chrysler Rail Transportation Corp. | added 4/91; eliminated 1/94 | | NRHS |
| 33 | HTCX | General Electric Railcar Services Corp. | added 1/94; eliminated 1/2000 | | NRHS |
| 34 | HTCX | General Electric Rail Services Corp. | added 1/2000; 7/2000 | | NRHS |
| 35 | HTCX | (NATX) GENERAL ELECTRIC RAIL SERVICES CORPORATION [CHRYSLER RAIL TRANSPORTATION CORP; TRANSPORTATION CORP. OF AMERICA; ARTHUR EQUIPMENT CO.; HARBOR TANK LINE; HAFFNER THRALL CAR CO.] | | | PWRC |
| 36 | HTCX | Transportation Corporation of America (GE Rail Services Corporation) | | | RSRV |
| 37 | HTCX | GENERAL ELECTRIC RAILCAR SERVICES C | | | SCAC4 |
| 38 | HTCY | HANOVER TRANSFER CO | | | SCAC1 |
| 39 | HTCY | HASTINGS TRUCK COMPANY INC | | | SCAC4 |
| 40 | HTCZ | HIBBING TACONITE CO. | | | PWRC |
