| 10801 | BSKS | BIG SKY TRANSFER & STORAGE INC | | | SCAC4 |
| 10802 | BSKT | BEROSIK TRUCKING INC | | | SCAC3 |
| 10803 | BSKT | BEROSIK TRUCKING INC | | | SCAC4 |
| 10804 | BSKU | BODEX-UKRAINE LTD | | UA | BIC |
| 10805 | BSKV | B S TRUCKING LLC | | | SCAC4 |
| 10806 | BSKW | BST TRUCKING | | | SCAC3 |
| 10807 | BSKY | BIG SKY EXPRESS, INC | | | SCAC3 |
| 10808 | BSL | Bosnia Airlines | Callsign: Bos-Air, | BIH | AVCODES |
| 10809 | BSL | Air Brasil Linhas Aereas Ltda | Callsign: Airbrasil, Founded in Janaury 2005. Ceased operations in March 2012. | BR | AVCODES |
| 10810 | BSL | B-S-L GmbH Betrieb Service Logistik | Mittenwalde, Halle | D | privat-bahn.de |
| 10811 | BSL | B-S-L GmbH | | DE | VKM |
| 10812 | BSLA | BLUEGRASS SOLUTIONS LLC | | | SCAC4 |
| 10813 | BSLB | BST SPECIALIZED LLC | | | SCAC4 |
| 10814 | BSLC | BUSH LUMBER COMPANY | | | SCAC3 |
| 10815 | BSLD | BLACK, S SHIPPING LTD | | | SCAC3 |
| 10816 | BSLD | BRISTOL AEROSPACE LIMITED | | | SCAC4 |
| 10817 | BSLE | BASELINE COMPANY | | | SCAC3 |
| 10818 | BSLG | BRIGHT SUN LOGISTICS INC | | | SCAC4 |
| 10819 | BSLI | BEST LTL INC | | | SCAC3 |
| 10820 | BSLI | BEST LTL INC | | | SCAC4 |
| 10821 | BSLK | BEST LOCK CORP | | | SCAC3 |
| 10822 | BSLK | BISSELL TRUCKING LLC | | | SCAC4 |
| 10823 | BSLL | BAIO SOPHISTICATED LIMOUSINE AND LI | | | SCAC3 |
| 10824 | BSLM | BEAS LIMOUSINE SERVICE INC | | | SCAC3 |
| 10825 | BSLO | BESLO TRUCKING INC | | | SCAC3 |
| 10826 | BSLO | BEASLEY TIMBER COMPANY INC | | | SCAC4 |
| 10827 | BSLP | BOSEO, LOUIS P | | | SCAC3 |
| 10828 | BSLP | BEST SLEEP CENTRE INC | | | SCAC4 |
| 10829 | BSLQ | BEST OIL | | | SCAC4 |
| 10830 | BSLR | BURLINGTON SHORT LINE | | | PWRC |
| 10831 | BSLS | B'S SHUTTLE SERVICE | | | SCAC4 |
| 10832 | BSLT | BERWICK STEEL TRUCKING COMPANY | | | SCAC3 |
| 10833 | BSLT | BASELINE TRANSPORTATION | | | SCAC4 |
| 10834 | BSLU | BSL CONTAINERS LIMITED | | HK | BIC |
| 10835 | BSLU | BLUE STAR LINE LTD | | | PWRC |
| 10836 | BSLU | Blue Star Line | | | RSRV |
| 10837 | BSLU | BLUE STAR LINES | | | SCAC3 |
| 10838 | BSLU | P & O NEDLLOYD BV | | | SCAC4 |
| 10839 | BSLV | BRYANT SALVAGE CO INC | | | SCAC3 |
| 10840 | BSLV | BROADRANGE LOGISTICS LLC | | | SCAC4 |
| 10841 | BSLX | General American Transportation Corp. | 4/1938 | | NAKINA |
| 10842 | BSLX | Bethlehem Steel Co. (General American Transportation Corp.) | 7/1937 | | NAKINA |
| 10843 | BSLX | Bethlehem Steel Co. | 8/1920-7/1935 | | NAKINA |
| 10844 | BSLX | Bethlehem Steel Co. (General American Transportation Corp.) | Apr-38 | | NRHS |
| 10845 | BSLX | GENERAL AMERICAN TRANSPORTATION (BETHELEHEM STEEL CO.) | | | PWRC |
| 10846 | BSLY | BEASLEY, RALPH TRUCKING | | | SCAC3 |
| 10847 | BSLY | BIRDSONS & ASSOCIATES LLC | | | SCAC4 |
| 10848 | BSM | Blue Sky Aviation S.A.L. | | RL | AVCODES |
| 10849 | BSM | Blue Sky Aviation | | | ICAO1 |
| 10850 | BSM | Bahnservice Mannheim GmbH | Mannheim | D | privat-bahn.de |
| 10851 | BSM | Bahnen der Stadt Monheim GmbH | Monheim | D | privat-bahn.de |
| 10852 | BSM | BALTIMORE STREETCAR MUSEUM | | | PWRC |
| 10853 | BSM | BSM Järnväg | 1997 - 2000 | S | svenska-lok.se |
| 10854 | BSM | Bahnen der Stadt Monheim | City: Monheim | D | TRAFFIC |
| 10855 | BSM | Bahnen der Stadt Monheim GmbH | | DE | VKM |
| 10856 | BSMC | BOSMAN CONSTRUCTION SUPPLY | | | SCAC3 |
| 10857 | BSMF | B & S MOTOR FREIGHT INC | | | SCAC3 |
| 10858 | BSMG | BAY SHORE MOVING & STORAGE | | | SCAC3 |
| 10859 | BSMG | Bahnservice Mannheim GmbH | Real: BSM | D | TRAFFIC |
| 10860 | BSMH | BELASCO MOBILE HOME SALES INC | | | SCAC3 |
| 10861 | BSMI | BEST MOVING SERVICE INC | | | SCAC3 |
| 10862 | BSMJ | BASIN MARITIME S A | | | SCAC4 |
| 10863 | BSMK | BIG SAM TRUCKING | | | SCAC4 |
| 10864 | BSML | BEDFORD SHIP MANAGEMENT LTD, | | | SCAC3 |
| 10865 | BSML | BSLE MALTA LIMITED | | | SCAC4 |
| 10866 | BSMM | BASIN MOBILE MOVERS INC | | | SCAC3 |
| 10867 | BSMN | BUSH MOVING & STORAGE INC | | | SCAC3 |
| 10868 | BSMO | BOLIO & SARGENTS MOVING & STORAGE I | | | SCAC3 |
| 10869 | BSMP | BEST MOVING & STORAGE CO | | | SCAC3 |
| 10870 | BSMP | BRADFORD SOAP MEXICO INC | | | SCAC4 |
| 10871 | BSMQ | BROSTROM SHIP MANAGEMENT AB | | | SCAC4 |
| 10872 | BSMR | BASSEMIERS TRANSPORTATION INC | | | SCAC3 |
| 10873 | BSMS | BAY STATE MOVING & STORAGE CO INC | | | SCAC3 |
| 10874 | BSMS | BLAKE & SONS MOVING & STORAGE INC | | | SCAC4 |
| 10875 | BSMS | BSM Järnväg | Real: BSM, 1997 - 2000 | S | TRAFFIC |
| 10876 | BSMT | BALSDON, M TRUCKING, LTD | | | SCAC3 |
| 10877 | BSMT | BALSDON, M TRUCKING, LTD | | | SCAC4 |
| 10878 | BSMTA | Metropolitan Transit Authority | City: Boston | USA | TRAFFIC |
| 10879 | BSMV | BAY STATE MOVING SYSTEMS INC | | | SCAC3 |
| 10880 | BSMW | BEST STEEL & METALS INC | | | SCAC4 |
| 10881 | BSMX | Bay State Milling Co. | eliminated 10/1993; 1/1994 (not listed); added 10/1996; eliminated 4/1997; 7/2000-7/2005 (not listed) | | NAKINA |
| 10882 | BSMX | United States Leasing International, Inc. | added 7/1971; 1/1975-1/1980; eliminated 10/1982 | | NAKINA |
| 10883 | BSMX | United States Leasing International, Inc. | 1/75-1/80; eliminated 10/82 | | NRHS |
| 10884 | BSMX | Bay State Milling Co. | eliminated 10/93; 1/94; added 10/96; eliminated 4/97; 7/2000 | | NRHS |
| 10885 | BSMX | *UNITED STATES LEASING INTERNATIONAL, INC. | | | PWRC |
| 10886 | BSMX | +BAY STATE MILLING COMPANY | | | PWRC |
| 10887 | BSMX | Bay State Milling | | | RSRV |
| 10888 | BSMX | BAY STATE MILLING COMPANY | | | SCAC4 |
| 10889 | BSMY | BEST MAYFLOWER LLC | | | SCAC4 |
| 10890 | BSMZ | BUCKSKIN MINE | | | PWRC |
| 10891 | BSN | Connectair Charters Ltd. | Callsign: Bastion, | CDN | AVCODES |
| 10892 | BSN | Connectair Charters | | | ICAO1 |
| 10893 | BSNA | BOSTON CAB ASSOCIATION INC | | | SCAC3 |
| 10894 | BSNA | BERGER TEXAS INC (BERGER SAN ANTONI | | | SCAC4 |
| 10895 | BSNC | B & S TRUCKING | | | SCAC3 |
| 10896 | BSNF | BUSCO INC | | | SCAC3 |
| 10897 | BSNF | BOSNA FREIGHT CORP | | | SCAC4 |
| 10898 | BSNH | BARNES, DONALD R | | | SCAC3 |
| 10899 | BSNI | BASIN TRUCKING INC | | | SCAC3 |
| 10900 | BSNI | BISON TRANSPORT INC | | | SCAC4 |
