| 1 | BTH | Air Saint Barthelemy | IATA: PV, Callsign: Barths, Designator PV* reinstated by IATA | BLM | AVCODES |
| 2 | BTH | Baltijas Helicopters | Callsign: Baltijas Helicopters, | LV | AVCODES |
| 3 | BTH | Barth's Aviation | | BLM | AVCODES |
| 4 | BTH | Air Saint Barthelemy | Callsign: Barths, Designator PV* recalled by IATA | BLM | AVCODES |
| 5 | BTH | Barth's Aviation | Callsign: Air Barth, | BLM | AVCODES |
| 6 | BTH | Baltijas Helicopters | | | ICAO1 |
| 7 | BTH | Bombardier Transportation | | DE | VKM |
| 8 | BTHB | BURNS TRUCK SERVICE | | | SCAC3 |
| 9 | BTHB | BURNS TRUCK SERVICE | | | SCAC4 |
| 10 | BTHC | BENTON-HECHT MOVING AND STORAGE INC | | | SCAC3 |
| 11 | BTHC | BEACHTEL TRUCKING | | | SCAC4 |
| 12 | BTHD | BARRETT HOLDING LTD | | | SCAC3 |
| 13 | BTHD | B T TRUCK BROKERAGE INC | | | SCAC4 |
| 14 | BTHE | BLYTHE TRUCKING | | | SCAC3 |
| 15 | BTHE | BRITTAIN TRUCKING CO | | | SCAC4 |
| 16 | BTHF | BARRETT TRUCKING | | | SCAC3 |
| 17 | BTHF | BETHLEHEM FARMS INC | | | SCAC4 |
| 18 | BTHG | BLAIR TRANSFER INC | | | SCAC3 |
| 19 | BTHI | BLACK TUSK HELICOPTER INC | | | SCAC4 |
| 20 | BTHJ | BARCENAS TRANSPORT | | | SCAC4 |
| 21 | BTHK | BROTHERS TRUCKING INC | | | SCAC4 |
| 22 | BTHL | BOOTHEEL TRANSPORT | | | SCAC4 |
| 23 | BTHM | BROWN THE MOVER | | | SCAC3 |
| 24 | BTHN | BLUE THUNDER TRUCK BROKERAGE INC | | | SCAC4 |
| 25 | BTHO | BETHEL TOWING | | | SCAC3 |
| 26 | BTHP | BARNARD TRANSPORTATION | | | SCAC3 |
| 27 | BTHP | BRITTON TRUCKING INC | | | SCAC4 |
| 28 | BTHR | BETHEL TRUCK SERVICE INC | | | SCAC3 |
| 29 | BTHR | BETHEL TRUCK SERVICE INC | | | SCAC4 |
| 30 | BTHS | BETHERS RAY | | | SCAC3 |
| 31 | BTHT | BARRETT MOBILE HOMES TRANSPORT INC | | | SCAC3 |
| 32 | BTHV | BERNDT TRUCKING INC | | | SCAC4 |
