| 1 | BB | Seaborne Airlines | ICAO: SBS, Callsign: Seaborne, Name changed from Seaborne Aviation, Inc. Establish in 1992 | USA | AVCODES |
| 2 | BB | Seaborne Aviation, Inc. | ICAO: SBS, Callsign: Seaborne, Name changed to Seaborne Airlines. Establish in 1992 | USA | AVCODES |
| 3 | BB | Balair / CTA Leisure Ltd. | ICAO: BBB, Callsign: Balair, Name changed to Belair 02 November 2001. | CH | AVCODES |
| 4 | BB | Air Great Lakes PYT Ltd. | | AUS | AVCODES |
| 5 | BB | Balair S.A. | ICAO: BBB, Callsign: Balair, Merged with CTA and name changed to Balair / CTA Leisure Ltd. | CH | AVCODES |
| 6 | BB | Blackhawk Airways, Inc. | ICAO: BAK, Callsign: Blackhawk, Ceased operations. | USA | AVCODES |
| 7 | BB | Cargo B Airlines | ICAO: CBB, Callsign: Cargo-Bee, Ceased operations on 01 July 2009 | B | AVCODES |
| 8 | BB | TopBrass Aviation Limited | ICAO: BRL, Callsign: Brass Line, Designator BB recalled by IATA | WAN | AVCODES |
| 9 | BB | Buckingham Branch R.R. Co. | added 7/1989; 1/1994-7/2005 | | NAKINA |
| 10 | BB | Buckingham Branch R.R. Co. | added 7/89; 1/94-7/2000 | | NRHS |
| 11 | BB | BUCKINGHAM BRANCH RAILROAD COMPANY | | | PWRC |
| 12 | BB | Buckingham Branch Railroad | | | RSRV |
| 13 | BB | | | CH | TRAFFIC |
| 14 | BB | Baggerbetrieb Burkhardt GmbH | | DE | VKM |
| 15 | BBA | Bannert Air | Callsign: Banair, | A | AVCODES |
| 16 | BBA | Bombardier, Inc. | Callsign: Bombardier, | CDN | AVCODES |
| 17 | BBA | Bannert Air | | | ICAO1 |
| 18 | BBA | Brabantsche Buurtspoorwegen en Autodiensten | | NL | TRAFFIC |
| 19 | BBAB | B B & B INC | | | SCAC3 |
| 20 | BBAB | B & B INDUSTRIES, INC | | | SCAC4 |
| 21 | BBAC | BOBAC TRUCKING CO INC | | | SCAC3 |
| 22 | BBAE | B & B AIR EXPRESS INC | | | SCAC3 |
| 23 | BBAE | B & B COMMERCIAL TRUCKING LLC | | | SCAC4 |
| 24 | BBAF | BURBANK FREIGHT DIVISION | | | SCAC3 |
| 25 | BBAF | B & B MOVERS IINC | | | SCAC4 |
| 26 | BBAG | BILL BLACK AGENCY INC | | | SCAC3 |
| 27 | BBAG | BV BOUWGRONDSTOFFEN AGM | | | SCAC4 |
| 28 | BBAH | BO-BACHS' TRANSPORT, INC. | | | SCAC3 |
| 29 | BBAK | BOBBER AUTO/TRUCK PLAZA | | | SCAC3 |
| 30 | BBAL | B B & L INCORPORATED | | | SCAC3 |
| 31 | BBAM | BELTRAN BROS LLC | | | SCAC4 |
| 32 | BBAM | Bălți Bus Authority | Real: BBA | MD | TRAFFIC |
| 33 | BBAO | B & B AUTO TRANSPORT | | | SCAC3 |
| 34 | BBAP | BARBICAN ARCHITECTURAL PRODUCTS LTD | | | SCAC4 |
| 35 | BBAR | BROWN, BYRON AND ROBERT | | | SCAC3 |
| 36 | BBAR | BEST BET AUTO | | | SCAC4 |
| 37 | BBAS | BOBS AUTO SERVICE INC | | | SCAC3 |
| 38 | BBAT | B A R TRANSPORTATION CO | | | SCAC3 |
| 39 | BBAT | BURTS RELIABLE INC | | | SCAC4 |
| 40 | BBAW | BARBAS TRUCKING CO INC | | | SCAC3 |
| 41 | BBB | Balair / CTA Leisure Ltd. | IATA: BB, Callsign: Balair, Name changed to Belair 02 November 2001. | CH | AVCODES |
| 42 | BBB | Balair S.A. | IATA: BB, Callsign: Balair, Merged with CTA and name changed to Balair / CTA Leisure Ltd. | CH | AVCODES |
| 43 | BBB | Swedjet Airways AB | IATA: VD, Callsign: Blackbird, Designator VD recalled by IATA | S | AVCODES |
| 44 | BBB | Blackbird Air Charter A/S | Callsign: Blackbird, Founded on 05 January 2015. Commeced operation on 01 October 2017. | DK | AVCODES |
| 45 | BBB | SwedJet Airways | IATA: VD | | ICAO1 |
| 46 | BBB | Bayer. Bahn Betriebs GmbH | Nördlingen | D | privat-bahn.de |
| 47 | BBB | BUSY BEE BUS TOURS | | | SCAC4 |
| 48 | BBB | Big Blue Bus | City: Santa Monica | US-CA | TRAFFIC |
| 49 | BBBB | BB BLANC AUDIO VISUAL & ENTERTAINME | | | SCAC4 |
| 50 | BBBC | B & B BUS CORPORAITON | | | SCAC3 |
| 51 | BBBC | BBC GLOBAL | | | SCAC4 |
| 52 | BBBD | B & B TRANSPORT | | | SCAC4 |
| 53 | BBBE | B-BAR-B EXPRESS | | | SCAC3 |
| 54 | BBBE | B B T | | | SCAC4 |
| 55 | BBBK | B & B TRUCK LINES INC | | | SCAC3 |
| 56 | BBBL | BIG BILLS BUS LINES INC | | | SCAC3 |
| 57 | BBBL | B B B AUTO ENTERPRISE LLC | | | SCAC4 |
| 58 | BBBM | (NATX) GENERAL ELECTRIC RAILCAR SERVICES CORPORATION | | | PWRC |
| 59 | BBBM | BURRELL BATEMAN BUS LINES LTD | | | SCAC3 |
| 60 | BBBN | BURNS BURNS & BURNS INC | | | SCAC4 |
| 61 | BBBO | BIBB COUNTY OIL CO INC | | | SCAC4 |
| 62 | BBBR | BAR HARBOR BAIT COMPANY | | | SCAC4 |
| 63 | BBBS | BIBBS BROKERAGE INC | | | SCAC4 |
| 64 | BBBW | BLACK BOW TRANSPORTATION INC | | | SCAC4 |
| 65 | BBBX | B.B. Blair | added 7/1965; 7/1965; eliminated 1/1966 | | NAKINA |
| 66 | BBBX | B.B. Blair Co. | added 4/1963; eliminated 7/1965 | | NAKINA |
| 67 | BBBX | B.B. Blair Co. | eliminated 7/65 | | NRHS |
| 68 | BBBX | B.B. Blair | added 7/65; 7/65; eliminated 1/66 | | NRHS |
| 69 | BBBX | B. B. BLAIR CO. | | | PWRC |
| 70 | BBC | Biman Bangladesh Airlines | IATA: BG, Callsign: Bangladesh, IATA Prefix: 997, | BD | AVCODES |
| 71 | BBC | Biman Bangladesh Airlines | IATA: BG | | ICAO1 |
| 72 | BBC | Brown, Boveri & Compagnie | | CH | TRAFFIC |
| 73 | BBCA | Biman Bangladesh Airlines | Real: BBC | BD | TRAFFIC |
| 74 | BBCB | BBC CUSTOM COACH INC | | | SCAC3 |
| 75 | BBCC | BUSY BEE CAB COMPANY | | | SCAC3 |
| 76 | BBCC | BELL BROS CARGO LLC | | | SCAC4 |
| 77 | BBCD | BEULAH BAPTIST CHURCH OF DEKALB COU | | | SCAC3 |
| 78 | BBCH | BBC CHARTERING & LOGISTIC GMBH & CO | | | SCAC4 |
| 79 | BBCI | BIG BEAR CARTAGE INC | | | SCAC3 |
| 80 | BBCI | BROTHERS BAKING CO INC | | | SCAC4 |
| 81 | BBCJ | BIERI BROKERAGE CO INC | | | SCAC4 |
| 82 | BBCK | BALL&BALL TRUCKING, INC | | | SCAC3 |
| 83 | BBCK | BALL & BALL TRUCKING INC | | | SCAC4 |
| 84 | BBCL | BBC LOGISTICS | | | SCAC4 |
| 85 | BBCM | B AND B COMMERCIAL INC | | | SCAC3 |
| 86 | BBCN | B & B TRUCKING CO INC | | | SCAC3 |
| 87 | BBCN | BOBCO INC | | | SCAC4 |
| 88 | BBCO | BARBCO | | | SCAC3 |
| 89 | BBCQ | BEST BUY CONTAINERS LLC | | | SCAC4 |
| 90 | BBCR | B & B CARRIERS INC | | | SCAC3 |
| 91 | BBCS | B & B COACHES | | | SCAC3 |
| 92 | BBCT | BBC INTERNATIONAL | | | SCAC3 |
| 93 | BBCT | BBC INTERNATIONAL | | | SCAC4 |
| 94 | BBCU | CONTENEDORES Y EMBALAJES NORMALIZADOS S.A | | E | BIC |
| 95 | BBCV | BLACK BIRD COMPANIA NAVIERA SA, | | | SCAC3 |
| 96 | BBCV | BABCOCK, DAVE TRUCKING LLC | | | SCAC4 |
| 97 | BBCX | Emmert Leasing LLC | added 7/2004; 7/2005 | | NAKINA |
| 98 | BBCX | ABB Power Generation, Inc. | added 4/1992; 1/1994-7/2000; eliminated 7/2004 | | NAKINA |
| 99 | BBCX | ABB Brown Boveri Power Generation, Inc. | added 1/1990; eliminated 4/1990 | | NAKINA |
| 100 | BBCX | ABB Steam Power Generation Co. | added 4/1990; eliminated 4/1992 | | NAKINA |
