| 1 | THS | Transportes Aereos Hispanos, S.A. | IATA: VD, Callsign: THS, ICAO callsign changed to Tahis | E | AVCODES |
| 2 | THS | Transportes Aereos Hispanos, S.A. | IATA: VD, Callsign: Tahis, ICAO callsign changed from THS. Designator VD recalled by IATA | E | AVCODES |
| 3 | THSB | TENNESSEE LUMBER HAULERS LLC | | | SCAC4 |
| 4 | THSD | TARA HILLS STUD | | | SCAC4 |
| 5 | THSE | TECHNICAL SERVICES INC | | | SCAC4 |
| 6 | THSG | THOUSAND ISLANDS PRINTING CO INC | | | SCAC4 |
| 7 | THSJ | THREE STAR TRANSPORTATION INC | | | SCAC4 |
| 8 | THSL | TRANS HARBOR SERVICES LLC | | | SCAC4 |
| 9 | THSN | THOMPSON, INC | | | SCAC1 |
| 10 | THSN | THORSON TRUCKING | | | SCAC4 |
| 11 | THSO | TRANSPORTES SANCHEZ | | | SCAC4 |
| 12 | THSP | THOMPSON TRANSPORTATION INC | | | SCAC4 |
| 13 | THSR | TRANSPORT NESKO INC | | | SCAC4 |
| 14 | THSR | Taiwan High Speed Railway | | RC | TRAFFIC |
| 15 | THSS | TORRES TRUCKING | | | SCAC4 |
| 16 | THST | THURSTON OIL COMPANY INC | | | SCAC4 |
| 17 | THSU | {TRADING HOUSE "SINTEZ-OIL", LTD};ZIPCODE=606030 | | RUS | BIC |
| 18 | THSU | TEMPOHOUSING | | | SCAC4 |
| 19 | THSW | THREADED SCREW PRODUCTS CO INC | | | SCAC4 |
| 20 | THSX | The New York, Susquehanna & Western Technical & Historical Society Inc. | 7/2005 (not listed) | | NAKINA |
| 21 | THSX | NEW YORK, SUSQUEHANNA & WESTERN TECHNICAL & HISTORICAL SOCIETY INC. | | | PWRC |
| 22 | THSX | New York, Susquehanna, & Western Technical and Historical Society | | | RSRV |
| 23 | THSX | NEW YORK SUSQUEHANNA & WESTERN TECH | | | SCAC4 |
