This is a list of current ICAO Designators for Aircraft Operating Agencies, Aeronautical Authorities and Services[1]:
| Code | Airline or company | Callsign | Country |
| BAA | Balkan Agro Aviation | BALKAN AGRO | Bulgaria |
| BAB | Bahrain Air BSC (Closed) | AWAL | Bahrain |
| BAC | BAC Leasing Limited | | United Kingdom |
| BAE | BAE Systems (Corporate Air Travel) | FELIX | United Kingdom |
| BAF | Belgian Air Force | BELGIAN AIRFORCE | Belgium |
| BAG | DBA Luftfahrtgesellschaft | SPEEDWAY | Germany |
| BAH | The Amiri Flight | BAHRAIN | Bahrain |
| BAJ | Baker Aviation | BAKER AVIATION | United States |
| BAK | Blackhawk Airways | BLACKHAWK | United States |
| BAL | Britannia Airways | BRITANNIA | United Kingdom |
| BAM | Business Air Services | BUSINESS AIR | Canada |
| BAN | British Antarctic Survey | PENGUIN | United Kingdom |
| BAP | Trans International Express Aviation | BIG APPLE | United States |
| BAR | Bradly Air (Charter) Services | BRADLEY | Canada |
| BAS | Aero Services | AEROSERV | Barbados |
| BAT | Premiair | BALLISTIC | Luxembourg |
| BAU | Bissau Airlines | AIR BISSAU | Guinea-Bissau |
| BAV | Bay Aviation Ltd | BAY AIR | Bangladesh |
| BAW | British Airways | SPEEDBIRD | United Kingdom |
| BAX | Best Aero Handling Ltd | | Russian Federation |
| BAY | Bayon Airlines | BAYON | Cambodia |
| BBA | Bannert Air | BANAIR | Austria |
| BBB | SwedJet Airways | BLACKBIRD | Sweden |
| BBC | Biman Bangladesh | BANGLADESH | Bangladesh |
| BBD | Bluebird Cargo | BLUE CARGO | Iceland |
| BBE | Ababeel Aviation | BABEL AIR | Sudan |
| BBL | IBM Euroflight Operations | BLUE | Switzerland |
| BBO | Flybaboo | BABOO | Switzerland |
| BBR | Santa Barbara Airlines | SANTA BARBARA | Venezuela |
| BBS | Beibars CJSC | BEIBARS | Kazakhstan |
| BBT | Air Bashkortostan | AGYDAL | Russian Federation |
| BBV | Bravo Airlines | BRAVO EUROPE | Spain |
| BBZ | Blue Bird Aviation | COBRA | Kenya |
| BCB | Carib Express | WAVEBIRD | Barbados |
| BCF | BACH Flugbetriebsges | BACH | Austria |
| BCH | Phillips Air | BEACHBALL | United States |
| BCI | Blue Islands | BLUE ISLAND | United Kingdom |
| BCK | Priority Aviation Company | BANKCHECK | United States |
| BCL | British Caribbean Airways | | United Kingdom |
| BCN | Ocean Air | BLUE OCEAN | Mauritania |
| BCR | British Charter | BACKER | United Kingdom |
| BCS | European Air Transport | EUROTRANS | Belgium |
| BCT | BCT Aviation | BOBCAT | United Kingdom |
| BCV | Business Aviation Center | BUSINESS AVIATION | Ukraine |
| BCY | CityJet | CITY-IRELAND | Ireland |
| BDA | Blue Dart Aviation | BLUE DART | India |
| BDF | Bissau Discovery Flying Club | BISSAU DISCOVERY | Guinea-Bissau |
| BDG | Mississippi State University | BULLDOG | United States |
| BDM | Air Bandama | BANDAMA | Ivory Coast |
| BDN | DERA Boscombe Down | GAUNTLET | United Kingdom |
| BDR | Badr Airlines | BADR AIR | Sudan |
| BDS | South Asian Airlines | SOUTH ASIAN | Bangladesh |
| BEA | Best Aviation Ltd | BEST AIR | Bangladesh |
| BEC | State Air Company Berkut | | Kazakhstan |
| BED | Belgorod Aviation Enterprise Joint-Stock Company | BELOGORYE | Russian Federation |
| BEE | Flybe | JERSEY | United Kingdom |
| BEF | Balear Express | BALEAR EXPRESS | Spain |
| BEH | Bel Air Helicopters | BLUECOPTER | Denmark |
| BEK | Berkut Air | BERKUT | Kazakhstan |
| BER | Air Berlin | AIR BERLIN | Germany |
| BES | Aero Services Executive | BIRD EXPRESS | France |
| BET | BETA - Brazilian Express Transportes Aereos | BETA CARGO | Brazil |
| BEZ | Kingfisher Air Services | SEA BREEZE | United States |
| BFA | Presidence Du Faso | | Burkina Faso |
| BFC | Basler Flight Service | BASLER | United States |
| BFF | Air Baffin | AIR BAFFIN | Canada |
| BFG | Bear Flight | BEARFLIGHT | Sweden |
| BFL | Buffalo Airways | BUFFALO | Canada |
| BFN | Compangnie Nationale Naganagani | | Burkino Faso |
| BFO | Bombardier | BOMBARDIER | Canada |
| BFR | Burkina Airlines | BURKLINES | Burkina Faso |
| BFS | Business Flight Sweden | BUSINESS FLIGHT | Sweden |
| BFW | Bahrain Defence Force | SUMMAN | Bahrain |
| BGA | Airbus Transport International | BELOUGA | France |
| BGD | Air Bangladesh | AIR BANGLA | Bangladesh |
| BGF | Aviodetachment-28 | BULGARIAN | Bulgaria |
| BGG | Aero BG | AERO BG | Mexico |
| BGH | BH Air | BALKAN HOLIDAYS | Bulgaria |
| BGI | British Gulf International | BRITISH GULF | Sao Tome and Principe |
| BGK | British Gulf International-Fez | GULF INTER | Krygyzstan |
| BGL | Benin Golf Air | BENIN GOLF | Benin |
| BGM | Bugulma Air Enterprise | BUGAVIA | Russian Federation |
| BGR | Budget Air Bangladesh | BUDGET AIR | Bangladesh |
| BGT | Bergen Air Transport | BERGEN AIR | Norway |
| BHA | Buddha Air | BUDDHA AIR | Nepal |
| BHC | Aerotaxis De La Bahia | BAHIA | Mexico |
| BHI | Balkh Airlines | SHARIF | Afghanistan |
| BHL | Bristow Helicopters | BRISTOW | United Kingdom |
| BHN | Bristow Helicopters Nigeria | BRISTOW HELICOPTERS | Nigeria |
| BHO | Bhoja Airlines | BHOJA | Pakistan |
| BHP | Belair Airlines | BELAIR | Switzerland |
| BHR | Bighorn Airways | BIGHORN AIR | United States |
| BHS | Bahamasair Holdings | BAHAMAS | Bahamas |
| BHT | Bright Air | BRIGHTAIR | Netherlands |
| BHV | Specavia Air Company | AVIASPEC | Russian Federation |
| BHY | Bosphorus European Airways | BOSPHORUS | Turkey |
| BIB | Michelin Air Services | | France |
| BID | Binair | BINAIR | Germany |
| BIE | Air Mediterranee | MEDITERRANEE | France |
| BIG | Big Island Air | BIG ISLE | United States |
| BIH | British International Helicopters | BRINTEL | United Kingdom |
| BIL | Billund Air Center | BILAIR | Denmark |
| BIN | Boise Interagency Fire Center | BISON-AIR | United States |
| BIR | Bird Leasing | BIRD AIR | United States |
| BIS | Irbis Air | IRBIS | Kazakhstan |
| BIV | Aviaservice | AVIASERVICE | Georgia |
| BIZ | Bizjet Ltd | BIZZ | United Kingdom |
| BJA | Baja Air | BAJA AIR | Mexico |
| BJC | Baltic Jet Aircompany | BALTIC JET | Latvia |
| BJK | Atlantic Airlines | BLACKJACK | United States |
| BJS | Business Jet Solutions | SOLUTION | United States |
| BJT | ACM Aviation | BAY JET | United States |
| BKA | Bankair | BANKAIR | United States |
| BKF | BF-Lento OY | BAKERFLIGHT | Finland |
| BKH | RAF Barkston Heath | | United Kingdom |
| BKJ | Barken International | BARKEN JET | United States |
| BKL | Aircompany Barcol | BARCOL | Russian Federation |
| BKP | Bangkok Airways | BANGKOK AIR | Thailand |
| BKR | Civil Air Patrol South Carolina Wing | BOX KAR | United States |
| BKV | Bukovyna | BUKOVYNA | Ukraine |
| BLA | All Charter Limited | ALL CHARTER | United Kingdom |
| BLB | Blue Bird Aviation | BLUEBIRD SUDAN | Sudan |
| BLC | Bellesavia | BELLESAVIA | Belarus |
| BLE | Blue Line | BLUE BERRY | France |
| BLF | Blue1 | BLUEFIN | Finland |
| BLG | Belgavia | BELGAVIA | Belgium |
| BLH | Blue Horizon Travel Club | BLUE HORIZON | United States |
| BLI | Thyssen Krupp AG | BLUELINE | Germany |
| BLJ | Blue Jet | BLUEWAY | Spain |
| BLK | Westcoast Energy | BLUE FLAME | Canada |
| BLL | Baltic Airlines | BALTIC AIRLINES | Russian Federation |
| BLM | Blue Airways | BLUE ARMENIA | Armenia |
| BLN | Bali International Air Service | BIAR | Indonesia |
| BLR | Atlantic Coast Airlines | BLUE RIDGE | United States |
| BLS | Bearskin Lake Air Service | BEARSKIN | Canada |
| BLT | Baltic Aviation | BALTAIR | United States |
| BLU | IMP Aviation Services | BLUENOSE | Canada |
| BLV | Bell-View Airlines | BELLVIEW AIRLINES | Nigeria |
| BLW | Wermlandsflyg AB | BLUESTAR | Sweden |
| BLX | TUIfly Nordic | BLUESCAN | Sweden |
| BLY | Starair | BLARNEY | Ireland |
| BLZ | Aero Barloz | AEROLOZ | Mexico |
| BMA | bmi | MIDLAND | United Kingdom |
| BMD | British Medical Charter | BRITISH MEDICAL | United Kingdom |
| BME | Briggs Marine Environmental Services | BRIGGS | United Kingdom |
| BMH | Bristow Masayu Helicopters | MASAYU | Indonesia |
| BMI | bmibaby | BABY | United Kingdom |
| BMJ | Bemidji Airlines | BEMIDJI | United States |
| BMK | GST Aero Aircompany | MURAT | Kazakhstan |
| BML | Bismillah Airlines | BISMILLAH | Bangladesh |
| BMM | Atlas Blue | ATLAS BLUE | Morocco |
| BMN | Bowman Aviation | BOWMAN | United States |
| BMR | British Midland Regional | | United Kingdom |
| BMV | Alatau Airlines | OLIGA | Kazkhstan |
| BMW | BMW | BMW-FLIGHT | Germany |
| BMX | Banco de Mexico | BANXICO | Mexico |
| BNB | Aero Banobras | AEROBANOBRAS | Mexico |
| BNC | Sundance Air | BARNACLE AIR | United States |
| BND | Bond Offshore Helicopters | BOND | United Kingdom |
| BNE | Benina Air | BENINA AIR | Libya |
| BNG | BN Group Limited | VECTIS | United Kingdom |
| BNI | Alberni Airways | ALBERNI | Canada |
| BNL | Blue Nile Ethiopia Trading | NILE TRADING | Ethiopia |
| BNR | Bonair Aviation | BONAIR | Canada |
| BNS | Bancstar - Valley National Corporation | BANCSTAR | United States |
| BNT | Bentiu Air Transport | BENTIU AIR | Sudan |
| BNV | Benane Aviation Corporation | BENANE | Mauritania |
| BNW | British North West Airlines | BRITISH NORTH | United Kingdom |
| BNX | IAACA (LAI) | AIR BARINAS | Venezuela |
| BNZ | Aerolineas Bonanza | AERO BONANZA | Mexico |
| BOA | Boniair | KUMANOVO | Macedonia |
| BOC | Aerobona | AEROBONA | Mexico |
| BOD | Bond Air Services | UGABOND | Uganda |
| BOE | Boeing | BOEING | United States |
| BOF | Bordaire | BORDAIR | Canada |
| BOI | Aboitiz Air Transport Corporation | ABAIR | Philippines |
| BOL | Transportes Aereos Bolivianos | BOL | Bolivia |
| BON | Air Bosna | AIR BOSNA | Bosnia and Herzegovina |
| BOO | Bookajet Limited | BOOKAJET | United Kingdom |
| BOT | Air Botswana | BOTSWANA | Botswana |
| BOU | Bouraq Indonesia Airlines | BOURAQ | Indonesia |
| BOX | Tiphook PLC | BOX | United Kingdom |
| BPA | Blue Panorama Airlines | BLUE PANOROMA | Italy |
| BPK | Berkhut ZK | VENERA | Kazakhstan |
| BPO | Bundepolizei-Fliegertruppe | PIROL | Germany |
| BPS | Budapest Aircraft Services/Manx2 | BASE | Hungary |
| BPT | Bonus Aviation | BONUS | United Kingdom |
| BPX | British Petroleum Exploration | | Colombia |
| BRB | BRA-Transportes Aereos | BRA-TRANSPAEREOS | Brazil |
| BRD | Brock Air Services | BROCK AIR | Canada |
| BRE | Breeze Ltd | AVIABREEZE | Ukraine |
| BRF | Air Bravo | AIR BRAVO | Uganda |
| BRG | Bering Air | BERING AIR | United States |
| BRK | Briansk State Air Enterprise | BRIANSK-AVIA | Russian Federation |
| BRL | Air Brasd'or | BRASD'OR | Canada |
| BRM | Air 500 | BOOMERANG | Canada |
| BRN | Branson Airlines | BRANSON | United States |
| BRO | BASE Regional Airlines | COASTRIDER | Netherlands |
| BRP | Airport Bratsk | AEROBRA | Russian Federation |
| BRQ | El-Buraq Air Transport | BURAQAIR | Libya |
| BRR | Mountain Air Service | MOUNTAIN AIR | United States |
| BRS | Brazilian Air Force | BRAZILIAN AIR FORCE | Brazil |
| BRT | British Regional Airlines | BRITISH | United Kingdom |
| BRU | Belavia Belarusian Airlines | BELARUS AVIA | Belarus |
| BRV | Bravo Air Congo | BRAVO | Democratic Republic of the Congo |
| BRW | Bright Aviation Services | BRIGHT SERVICES | Bulgaria |
| BRX | Buffalo Express Airlines | BUFF EXPRESS | United States |
| BRY | Burundayavia | BURAIR | Kazakhstan |
| BRZ | Samara | BERYOZA | Russian Federation |
| BSB | Air Wings | ARBAS | Moldova |
| BSC | Bistair - Fez - | BIG SHOT | Krygyzstan |
| BSD | Blue Star Airlines | AIRLINES STAR | Mexico |
| BSI | Brasair Transportes Aereos | BRASAIR | Brazil |
| BSJ | Blue Swann Aviation | BLUE SWANN | United Kingdom |
| BSK | Miami Air International | BISCAYNE | United States |
| BSM | Blue Sky Aviation | | Lebanon |
| BSN | Connectair Charters | BASTION | Canada |
| BSP | Global Airways | | Democratic Republic of the Congo |
| BSR | Guine Bissaur Airlines | BISSAU AIRLINES | Guinea-Bissau |
| BSS | BAT Bissau Aero Transporte | BISSAU AIRSYSTEM | Guinea-Bissau |
| BST | Best Air | TUNCA | Turkey |
| BSW | Blue Sky Airways | SKY BLUE | Czech Republic |
| BSY | Big Sky Airlines | BIG SKY | United States |
| BTA | Continental Express (ExpressJet) | JET LINK | United States |
| BTC | Bashkirian Airlines | BASHKIRIAN | Russian Federation |
| BTE | Air Baltic Eastern | BALTIC EAST | Latvia |
| BTH | Baltijas Helicopters | BALTIJAS HELICOPTERS | Latvia |
| BTI | Air Baltic | AIRBALTIC | Latvia |
| BTK | Baltyka | BALTYKA | Ukraine |
| BTL | Baltia Air Lines | BALTIA FLIGHT | United States |
| BTP | Veritair Ltd | NET RAIL | United Kingdom |
| BTR | Botir-Avia | BOTIR-AVIA | Krygyzstan |
| BTS | Aerotaxis Albatros | AEROLINEAS ALBATROS | Mexico |
| BTT | BT-Slavuta | BEETEE-SLAVUTA | Ukraine |
| BTU | Rolls Royce Bristol Engine Division | ROLLS | United Kingdom |
| BTV | Metro Batavia | BATAVIA | Indonesia |
| BUC | Bulgarian Air Charter | BULGARIAN CHARTER | Bulgaria |
| BUE | Orebro Aviation | BLUELIGHT | Sweden |
| BUG | Mokulele Flight Service, Inc. | Mokulele Airlines / go!Express | United States | BUL | Blue Airlines | BLUE AIRLINES | Democratic Republic of the Congo |
| BUN | Buryat Airlines Aircompany | BURAL | Russian Federation |
| BUZ | Buzz Stansted | BUZZ | United Kingdom |
| BVA | Buffalo Airways | BUFFALO AIR | United States |
| BVC | Bulgarian Aeronautical Centre | BULGARIAN WINGS | Bulgaria |
| BVN | Baron Aviation Services | SHOW-ME | United States |
| BVR | ACM Air Charter | BAVARIAN | Germany |
| BVT | Berjaya Air | BERJAYA | Malaysia |
| BVU | Bellview Airlines Sierra Leone | | Sierra Leone |
| BVV | Spark+ Joint-Stock Company | SPARK | Russian Federation |
| BWA | Caribbean Airlines | CARIBBEAN AIRLINES | Trinidad and Tobago |
| BWG | Blue Wings | BLUE WINGS | Germany |
| BWI | Blue Wing Airlines | BLUE TAIL | Suriname |
| BWL | BWA (2002) Ltd | BRITWORLD | United Kingdom |
| BWY | Fleet Requirements Air Direction Unit | BROADWAY | United Kingdom |
| BXA | Bahrain Executive Air Services | BEXAIR | Bahrain |
| BXH | Bar XH Air | PALLISER | Canada |
| BXI | Brussels International Airlines | XENIA | Belgium |
| BXR | Redding Aero Enterprises | BOXER | United States |
| BYA | Berry Aviation | BERRY | United States |
| BYC | Northern Airlines Sanya | BEIYA | China |
| BYL | Bylina Joint-Stock Company | BYLINA | Russian Federation |
| BYR | Berytos Airlines | | Lebanon |
| BYT | Patriot Aviation Limited | BYTE | United Kingdom |
| BYE | Bayu Indonesia Air | BAYU | Indonesia |
| BZA | Bizair Fluggesellschaft | BERLIN BEAR | Germany |
| BZD | Canadian Global Air Ambulance | BLIZZARD | Canada |
| BZF | Jet Aviation Business Jets | BIZFLEET | United States |
| BZH | Brit Air | BRITAIR | France |
| BZS | Aero Biniza | BINIZA | Mexico |
| BZZ | Butane Buzzard Aviation Corportation | BUZZARD | United Kingdom |
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