| 1 | BSL | Bosnia Airlines | Callsign: Bos-Air, | BIH | AVCODES |
| 2 | BSL | Air Brasil Linhas Aereas Ltda | Callsign: Airbrasil, Founded in Janaury 2005. Ceased operations in March 2012. | BR | AVCODES |
| 3 | BSL | B-S-L GmbH Betrieb Service Logistik | Mittenwalde, Halle | D | privat-bahn.de |
| 4 | BSL | B-S-L GmbH | | DE | VKM |
| 5 | BSLA | BLUEGRASS SOLUTIONS LLC | | | SCAC4 |
| 6 | BSLB | BST SPECIALIZED LLC | | | SCAC4 |
| 7 | BSLC | BUSH LUMBER COMPANY | | | SCAC3 |
| 8 | BSLD | BLACK, S SHIPPING LTD | | | SCAC3 |
| 9 | BSLD | BRISTOL AEROSPACE LIMITED | | | SCAC4 |
| 10 | BSLE | BASELINE COMPANY | | | SCAC3 |
| 11 | BSLG | BRIGHT SUN LOGISTICS INC | | | SCAC4 |
| 12 | BSLI | BEST LTL INC | | | SCAC3 |
| 13 | BSLI | BEST LTL INC | | | SCAC4 |
| 14 | BSLK | BEST LOCK CORP | | | SCAC3 |
| 15 | BSLK | BISSELL TRUCKING LLC | | | SCAC4 |
| 16 | BSLL | BAIO SOPHISTICATED LIMOUSINE AND LI | | | SCAC3 |
| 17 | BSLM | BEAS LIMOUSINE SERVICE INC | | | SCAC3 |
| 18 | BSLO | BESLO TRUCKING INC | | | SCAC3 |
| 19 | BSLO | BEASLEY TIMBER COMPANY INC | | | SCAC4 |
| 20 | BSLP | BOSEO, LOUIS P | | | SCAC3 |
| 21 | BSLP | BEST SLEEP CENTRE INC | | | SCAC4 |
| 22 | BSLQ | BEST OIL | | | SCAC4 |
| 23 | BSLR | BURLINGTON SHORT LINE | | | PWRC |
| 24 | BSLS | B'S SHUTTLE SERVICE | | | SCAC4 |
| 25 | BSLT | BERWICK STEEL TRUCKING COMPANY | | | SCAC3 |
| 26 | BSLT | BASELINE TRANSPORTATION | | | SCAC4 |
| 27 | BSLU | BSL CONTAINERS LIMITED | | HK | BIC |
| 28 | BSLU | BLUE STAR LINE LTD | | | PWRC |
| 29 | BSLU | Blue Star Line | | | RSRV |
| 30 | BSLU | BLUE STAR LINES | | | SCAC3 |
| 31 | BSLU | P & O NEDLLOYD BV | | | SCAC4 |
| 32 | BSLV | BRYANT SALVAGE CO INC | | | SCAC3 |
| 33 | BSLV | BROADRANGE LOGISTICS LLC | | | SCAC4 |
| 34 | BSLX | General American Transportation Corp. | 4/1938 | | NAKINA |
| 35 | BSLX | Bethlehem Steel Co. (General American Transportation Corp.) | 7/1937 | | NAKINA |
| 36 | BSLX | Bethlehem Steel Co. | 8/1920-7/1935 | | NAKINA |
| 37 | BSLX | Bethlehem Steel Co. (General American Transportation Corp.) | Apr-38 | | NRHS |
| 38 | BSLX | GENERAL AMERICAN TRANSPORTATION (BETHELEHEM STEEL CO.) | | | PWRC |
| 39 | BSLY | BEASLEY, RALPH TRUCKING | | | SCAC3 |
| 40 | BSLY | BIRDSONS & ASSOCIATES LLC | | | SCAC4 |
