| 12001 | BTYR | BOUNTY TRANSPORTATION | | | SCAC4 |
| 12002 | BTYS | BEST TRANSPORTATION SERVICES INC | | | SCAC3 |
| 12003 | BTYS | BEST TRANSPORTATION SERVICES INC | | | SCAC4 |
| 12004 | BTYT | BEST YET EXPRESS | | | SCAC3 |
| 12005 | BTYT | BEST YET EXPRESS INC | | | SCAC4 |
| 12006 | BTYV | BRENNANS, TERRY SERVICE INC | | | SCAC4 |
| 12007 | BTZ | Bristow US, LLC | IATA: L9, Callsign: Bristow Group, | USA | AVCODES |
| 12008 | BTZ | Bayr. Trailerzuggesellschaft für bimodalen Güterzugverkehr | München | D | privat-bahn.de |
| 12009 | BTZ | BLACK THUNDER | | | PWRC |
| 12010 | BTZC | BETZ, CARL H | | | SCAC3 |
| 12011 | BTZC | BETZ TRANSFORMERS INC | | | SCAC4 |
| 12012 | BTZE | BUTZ, ELMER C TRUCKING | | | SCAC3 |
| 12013 | BTZF | BELASIC AND TREBOUR TRUCKING INC | | | SCAC3 |
| 12014 | BTZH | BLITZ CORPORATION, THE | | | SCAC3 |
| 12015 | BTZL | BALTZELLS | | | SCAC3 |
| 12016 | BTZM | BROTZMAN TRUCKING | | | SCAC3 |
| 12017 | BTZN | BARBOSA TAMEZ, MANUEL | | | SCAC4 |
| 12018 | BTZR | BLITZ TRANSPORT, INC | | | SCAC3 |
| 12019 | BTZR | BALTAZAR TRUCKING | | | SCAC4 |
| 12020 | BTZS | BLUE TIDE SHIPPING CORPORATION | | | SCAC3 |
| 12021 | BTZT | BUTTON TRANSPORTATION INC | | | SCAC3 |
| 12022 | BU | Braathens ASA | ICAO: BRA, Callsign: Braathens, IATA Prefix: 154, ICAO callsign changed to Scanor. Formerly Braathens South American and Far East Airtransport A/S | N | AVCODES |
| 12023 | BU | Braathens South American and Far East Air Transport | ICAO: BRA, IATA Prefix: 154, | N | AVCODES |
| 12024 | BU | Braathens ASA | ICAO: BRA, Callsign: Scanor, IATA Prefix: 154, ICAO callsign changed from Braathens. ICAO designator changed to CNO. Formerly Braathens South American and Far East Airtransport A/S | N | AVCODES |
| 12025 | BU | SAS Braathens AS | ICAO: CNO, Callsign: Scanor, IATA Prefix: 154, Integrated into mainline SAS 01 June 2007. Name changed from Braathens ASA. ICAO designator changed from BRA. ICAO callsign changed from Braathens. Formerly Braathens South American and Far East Airtransport A/S | N | AVCODES |
| 12026 | BU | Compagnie Africaine d'Aviation CAA | ICAO: FPY, Callsign: Africompany, IATA Designator changed from E9 | ZRE | AVCODES |
| 12027 | BU | Compagnie Africaine d'Aviation | | ZRE | AVCODES |
| 12028 | BUA | Business Aviation A/S | Callsign: Busyair, | DK | AVCODES |
| 12029 | BUAA | BUSK, A A MOVING & STORAGE | | | SCAC3 |
| 12030 | BUAA | BUSBY ENTERPRISES LTD | | | SCAC4 |
| 12031 | BUAF | British United Air Ferries | | GB | TRAFFIC |
| 12032 | BUAG | BUGATTI FREIGHT INTL (USA) INC | | | SCAC4 |
| 12033 | BUAH | BURR, RALPH E | | | SCAC3 |
| 12034 | BUAH | BURKRAFT SERVICES | | | SCAC4 |
| 12035 | BUAJ | BURKE, ALFRED J & SONS LTD | | | SCAC4 |
| 12036 | BUAK | BUENA TRUCK INC | | | SCAC3 |
| 12037 | BUAM | BRUA, MIKE | | | SCAC3 |
| 12038 | BUAN | BUANNO TRANSPORTATION CO | | | SCAC3 |
| 12039 | BUAP | BUMPERS OIL CO LLC | | | SCAC4 |
| 12040 | BUAQ | BRUE, REUBEN A | | | SCAC3 |
| 12041 | BUAS | BUCHANAN & SONS | | | SCAC3 |
| 12042 | BUAT | BURLINGTON AUTOMATION CORPORATION | | | SCAC4 |
| 12043 | BUB | Air Bourbon | IATA: ZN, Callsign: Bourbon, Commenced operations on 07 June 2003. Ceased operations in December 2004. | REU | AVCODES |
| 12044 | BUB | Air Bourbon | IATA: ZB | | ICAO1 |
| 12045 | BUB | Brenner & Brenner Dampflokomotiven Betriebsgesellschaft mbH | | AT | VKM |
| 12046 | BUBB | BUSTOS BROTHERS TRUCKING | | | SCAC4 |
| 12047 | BUBD | BURROWS, BILLY D | | | SCAC3 |
| 12048 | BUBG | BUCH BROKERAGE & CO INC | | | SCAC3 |
| 12049 | BUBH | BUTTEL BROTHERS | | | SCAC3 |
| 12050 | BUBJ | BLUE BOY TRANSPORTATION SERVICES IN | | | SCAC3 |
| 12051 | BUBK | BUSH BROKERAGE INC | | | SCAC3 |
| 12052 | BUBL | BUBLITZ, DALE | | | SCAC3 |
| 12053 | BUBM | BUBER, THOMAS E INC | | | SCAC3 |
| 12054 | BUBM | BAKERS SUPPLY CO INC | | | SCAC4 |
| 12055 | BUBN | BUCHNOFF BROS TRUCKING | | | SCAC3 |
| 12056 | BUBO | BUHR BROS TRANSPORT INC | | | SCAC3 |
| 12057 | BUBO | BUHR BROS TRANSPORT INC | | | SCAC4 |
| 12058 | BUBP | BUREAU OF BUSINESS PRACTICE | | | SCAC3 |
| 12059 | BUBR | BURGER BROS | | | SCAC3 |
| 12060 | BUBS | BUTLER BROS INC | | | SCAC3 |
| 12061 | BUBT | BURCO BROS TRUCKING LTD | | | SCAC3 |
| 12062 | BUBV | BAUERS, BOB TOWING SERVICE INC | | | SCAC3 |
| 12063 | BUC | Bulgarian Air Charter Ltd. | IATA: H6, Callsign: Bulgarian Charter, Name changed to European Air Charter. | BG | AVCODES |
| 12064 | BUC | European Air Charter Ltd. | IATA: H6, Callsign: Eurocharter, Name changed from Bulgarian Air Charter. ICAO callsign changed from Bulgarian Charter. | BG | AVCODES |
| 12065 | BUC | Bulgarian Air Charter | | | ICAO1 |
| 12066 | BUCA | BUCHANAN TRUCKING CO | | | SCAC3 |
| 12067 | BUCA | BUCHANAN OIL CO | | | SCAC4 |
| 12068 | BUCC | BURNETT CONSTRUCTION COMPANY | | | SCAC3 |
| 12069 | BUCC | BUCCI STABLES | | | SCAC4 |
| 12070 | BUCD | BUCHHOLZ, A TRUCKING | | | SCAC3 |
| 12071 | BUCE | BUCCANEER ENTERPRISES INC | | | SCAC4 |
| 12072 | BUCF | BUCHANAN TRANSPORT INC | | | SCAC3 |
| 12073 | BUCG | BURNETT, C G | | | SCAC3 |
| 12074 | BUCH | BUCHANAN OIL CORPORATION | | | SCAC4 |
| 12075 | BUCI | BUCCANEER MOVING & STORAGE INC | | | SCAC3 |
| 12076 | BUCJ | BACKHAULING USA CORP | | | SCAC4 |
| 12077 | BUCK | BUCKLER TRANSPORT INC | | | SCAC4 |
| 12078 | BUCL | BUCKEYE STORAGE COMPANY, THE | | | SCAC3 |
| 12079 | BUCM | BUCKLEY CARTAGE LIMITED | | | SCAC4 |
| 12080 | BUCN | BOUCHER TRUCKING | | | SCAC4 |
| 12081 | BUCO | BURRARD CARTAGE CO LTD | | | SCAC3 |
| 12082 | BUCP | BUCKLEY, JOSEPH F, JR | | | SCAC3 |
| 12083 | BUCP | BUCKEYE TRANSPORTATION | | | SCAC4 |
| 12084 | BUCR | BURCH TRANSPORT INC | | | SCAC3 |
| 12085 | BUCR | BUNCH TRANSPORT INC | | | SCAC4 |
| 12086 | BUCS | BUCHMEIER & SONS INC | | | SCAC3 |
| 12087 | BUCS | BUCKEYE LOGISTICS LLC | | | SCAC4 |
| 12088 | BUCT | BUTLER, CHARLES T JR | | | SCAC4 |
| 12089 | BUCU | GEORG BUCHNER INTERN. SPEDITION GMBH | | D | BIC |
| 12090 | BUCU | GEORG BUCHNER INTERN SPEDITION GMBH | | | SCAC4 |
| 12091 | BUCW | BUTLER CARRIERS INC | | | SCAC3 |
| 12092 | BUCY | BURGENER CONTRACT CARRIERS | | | SCAC3 |
| 12093 | BUD | Air Budapest Club Ltd. | Callsign: Buddy, | H | AVCODES |
| 12094 | BUDA | BUDS WRECKER SERVICE | | | SCAC3 |
| 12095 | BUDB | BUDS WRECKER SERVICE | | | SCAC3 |
| 12096 | BUDB | BOURDEAU BROS INC | | | SCAC4 |
| 12097 | BUDD | | | USA | TRAFFIC |
| 12098 | BUDE | BURKHEAD, JOHN L INC | | | SCAC4 |
| 12099 | BUDF | BUD-DEE WHOLESALE LUMBER INC | | | SCAC3 |
| 12100 | BUDI | BUD'S DELIVERY, INC | | | SCAC3 |
