B
- B/E Aerospace – United States, UK, UAE, www.beaerospace.com
- B&B Manufacturing Company – Valencia, Ca, www.bbmfg.com
- B&F Technik, B&F Technik Vertriebs GmbH – Germany
- B&W, Boeing & Westervelt – United States, (1916) > Pacific Aero
- Babcock Aircraft Company
- British Aircraft Corporation (BAC) Ltd – United Kingdom, (1959–1977) > British Aerospace
- Bach Aircraft – United States
- Bachem, Bachem – Germany, (1944–1945)
- Back Bone, Tallard, France
- Backcountry Super Cubs, Douglas, Wyoming, United States
- BAE Systems, BAE Systems PLC – United Kingdom, (1999–present)
- BAE Systems Australia, BAE Systems Australia Ltd – Australia
- BAI, Bureau of Aircraft Industry – Republic of China, (1946–1969) > Air Technical Bureau
- Bakeng (1), Bakeng Aircraft – United States
- Bakeng (2), Gerald Bakeng – United States
- Baldwin (1), Baldwin Aircraft Corporation – United States
- Baldwin (2), Gary Baldwin – United States
- Ball-Bartoe – United States
- Barkley-Grow, Barkley Grow Aircraft Corporation – United States
- Barnett, Barnett Rotorcraft – United States
- Barr, Barr Aircraft – United States
- Barrows, Bob Barrows – United States
- Bartel, Ryszard Bartel – Poland, (1923–1931)
- Bartlett, Bartlett Aircraft Corporation – United States, (1945–?)
- Basler, Basler Turbo Conversions Inc – United States
- BAT, British Aerial Transport Co. Ltd. – United Kingdom
- Bay Aviation, Bay – United States
- Bayerische Flugzeugwerke, Bayerische Flugzeugwerke – Germany, (1926–1938) (BFW – Bavarian Aircraft Works) > Messerschmitt
- BDC Aero Industrie, Lachute, Quebec, Canada
- Bd-Micro, BD-Micro Technologies Inc – United States
- Beagle, Beagle Aircraft (1969) Ltd – United Kingdom, (?-1970) > Scottish Aviation
- Beagle, Beagle Aircraft Ltd – United Kingdom
- Beagle-Auster, Beagle-Auster Ltd – United Kingdom
- Beardmore, William Beardmore & Co – United Kingdom
- Beaujon Aircraft – United States
- Bede, BD Micro Technologies Inc – United States
- Bede, Bede Aircraft Corporation – United States
- Bede, Bede Aircraft Inc – United States
- Bede, Bede Aviation Corporation – United States
- Bede, Bede Jet Corporation – United States
- Bede, BEDEAmerica Aerosport LLC – United States
- Beech, Beech Aircraft Corporation – United States, (1932–1980) > Raytheon > Hawker Beechcraft
- Beech-Sferma, see Beech and Sferma – United States/France
- Beecraft, Bee Aviation Associates, Inc. – United States, (1948–1960)
- Beets, Glenn Beets – United States
- Beijing Keyuan, Beijing Keyuan Light Aircraft Industrial Company Ltd – China
- Belairbus, Belairbus – Belgium, (1979–present)
- Bel-Aire, Bel-Aire Aviation – United States
- Bell, Bell Aircraft Corporation – United States, (1935–1960)
- Bell, Bell Helicopter Company, Division of Bell Aerospace Corporation – United States, (1960–present)
- Bell, Bell Helicopter Textron Inc – United States
- Bell, Bell Helicopter Textron, Division of Textron Canada Ltd – Canada
- Bell, Bell Helicopter Textron, Division of Textron Inc – United States
- Bell-Agusta, Bell-Agusta Aerospace Company – United States/Italy
- Bellanca, Bellanca Aircraft Corporation – United States, (1927–1983) > AviaBellanca
- Bellanca, Bellanca Aircraft Engineering – United States
- Bellanca, Bellanca Inc – United States
- Bellanca, Bellanca Sales Manufacturing Inc – United States
- Bell-Boeing, see Bell and Boeing – United States
- Beneš & Hajn, Beneš & Hajn – Czechoslovakia, (1923) > Avia
- Beneš-Mráz, inž. P. Beneš a inž. J. Mráz, továrna na letadla – Czechoslovakia, (1935–?)
- Bengis, Bengis Aircraft Company (Pty) Ltd – South Africa
- Bensen, Bensen Aircraft Corporation – United States, (?-1987)
- Bereznyak-Isayev, Alexander Yakovlevich Bereznyak and Alexei Mikhailovich Isayev – Soviet Union
- Berger, Hans Berger – Switzerland
- Beriev, Beriev OKB – Russia, (1934–present) (Beriev Aircraft Company)
- Beriev, Berieva Aviatsionnyi Kompaniya – Russia
- Beriev, Taganrogsky Aviatsionnyi Nauchno-Tekhnicheskiy Kompleks Imeni G. M. Berieva – Russia
- Berkut, Berkut Engineering Inc – United States
- Berliner, Berliner Aircraft Co. – United States, (1926–1929) > Berliner-Joyce
- Berliner-Joyce, Berliner-Joyce Aircraft Corp. – United States, (1929–?)
- Bernard, Société des Avions Bernard – France
- Berwick, FW Berwick and Company Ltd. – United Kingdom
- Besson, Besson – France, (1915–1928) > ANF Mureaux
- Best Off, Best Off – France, (?-present)
- Bharat, Bharat Heavy Electricals Ltd – India
- Billie, Billie Aero Marine – France
- Bilsam Aviation, Poznań, Poland
- Binder, Binder Aviatik KG – Germany
- Birdman, Birdman Aircraft, US
- Birdman, Birdman Enterprises, Canada
- Bisnovat, Bisnovat – Russia
- Bitz, Bitz Flugzeugbau GmbH – Germany
- Bitz, Fa. Josef Bitz – Germany
- Blackburn, Blackburn Aircraft Ltd – United Kingdom, (1914–1949) > General Aircraft Ltd
- Blackshape srl, Monopoli, Italy
- Blackwing Sweden, Lund, Sweden
- Blériot, Société Blériot Aéronautique – France, (1906–1914) > Blériot-SPAD
- Blériot-SPAD, Blériot-SPAD – France, (1914–1936) > Sud-Ouest
- Blériot-Voisin, Blériot-Voisin – France, (1903–1906) > Blériot, Voisin
- Bloch, Societé des Avions Marcel Bloch – France, (1930–1936) (1945) > Sud-Ouest, Dassault
- Blohm & Voss, Blohm Und Voss – Germany, (1930–1969) > Messerschmitt-Bölkow-Blohm
- Blue Yonder, Blue Yonder Aviation Inc – Canada
- Blume, Walter Blume – Germany
- BNG, see B-N Group Ltd – United Kingdom
- B-N Group, B-N Group Ltd – United Kingdom, (1964–present) (Britten-Norman)
- Boeing, Boeing Aircraft Company – United States, (1916–present)
- Boeing, The Boeing Airplane Company – United States
- Boeing, The Boeing Company – United States
- Boeing Canada, Boeing Aircraft of Canada Ltd – Canada
- Boeing North American, Boeing North American, Inc. – United States, (1996–present)
- Boeing Vertol, Boeing Vertol Company – United States
- Boeing-Sikorsky, see Boeing and Sikorsky – United States
- Boeve, Boeve Fiberglass Components Inc – United States
- Bohemia, Bohemia – Czech Republic
- Boisavia, Société Boisavia – France
- Bolkow, Bölkow-Apparatebau GmbH – Germany, (1948–1968) > Messerschmitt-Bölkow
- Bolkow, Bölkow-Entwicklungen GmbH – Germany
- Booth Aerospace North America – United States
- Bombardier, Bombardier Inc – Canada, (1986–present)
- Borel, Etablissements Borel, France > SGCIM
- Boulton & Paul Ltd United Kingdom, (1914–1934)
- Boulton Paul Aircraft Ltd – United Kingdom, (1934–1961)
- Bowers, Peter M. Bowers – United States
- Bradley, Bradley Aerospace – United States
- Brandenburg, Brandenburg – Germany
- Brandli, Max Brändli – Switzerland
- Brantly, Brantly Helicopter Corporation – United States
- Brantly, Brantly Helicopter Industries USA Company Ltd – United States
- Brantly, Brantly International Inc (Helicopter Division) – United States
- Brantly-Hynes, Brantly-Hynes Helicopter Inc – United States, (1975–?)
- Bratukhin, Bratukhin – Russia, (1940–1951)
- Brditschka, H. W. Brditschka OHG – Austria
- Brditschka, HB-Brditschka GmbH & Co KG – Austria
- Breda, Societa Italiana Ernesto Breda – Italy
- Bredanardi, BredaNardi Costruzione Aeronautiche SpA – Italy
- Breguet, Société des Ateliers d'Aviation Louis Bréguet – France, (1911–1969) > Dassault-Breguet
- Brewster, Brewster Aeronautical Corporation – United States, (1932–1946)
- Brian Allen, Brian Allen Aviation – United Kingdom
- Briegleb, Gus Briegleb – US
- Bristol, Bristol Aircraft Ltd – United Kingdom, (1910–1959) > British Aircraft Corporation
- Bristol, The Bristol Aeroplane Company Ltd – United Kingdom
- Bristol Helicopter, Bristol Helicopter Ltd. – United Kingdom, (1944–1969) > Westland Aircraft
- British Aerospace, British Aerospace – United Kingdom, (1977–1999) (BAe) > BAE Systems
- British Aerospace, British Aerospace PLC – United Kingdom
- British Aircraft Company, British Aircraft Company – United Kingdom
- British Aircraft Manufacturing, British Aircraft Mfg. Co. – United Kingdom, (BAMC)
- British Klemm, British Aircraft Klemm Aeroplane Co Ltd. – United Kingdom, > British Aircraft Mfg. Co.
- Britten-Norman, Britten-Norman (Bembridge) Ltd – United Kingdom
- Britten-Norman, Britten-Norman Ltd – United Kingdom, (1964–present)
- BRM Costruções Aeronáuticas, Pero Pinheiro, Portugal
- Brochet, Constructions Aéronautiques Maurice Brochet – France
- Ken Brock Manufacturing, Stanton, California, United States
- Brokaw, Bergon Brokaw – US
- Brooklands, Brooklands Aerospace Ltd – United Kingdom
- Brooklands, Brooklands Aircraft Ltd – United Kingdom
- Brügger, Max Brügger – Switzerland
- Brush Electrical, Brush Electrical Engineering Co. Ltd. – United Kingdom, (Originally Anglo-American Brush Electric Light Corporation)
- Brutsche Aircraft Corporation, Salt Lake City, Utah, United States
- Buchanan, Buchanan Aircraft Corporation Ltd – Australia
- Bucker, Bücker Flugzeugbau GmbH – Germany, (1932–1945)
- Bucker Prado, Bücker Prado SL – Spain
- București, Intreprinderea de Avioane București – Romania
- Budd Manufacturing, Edward G. Budd Manufacturing Company – United States
- Buethe, Buethe Enterprises Inc – United States
- Buhl, Buhl Aircraft Company – United States
- Bul, Bourgogne Ultra Léger Aviation – France
- Burgess, Burgess Company – United States, (1911–1916) (Originally Burgess Company and Curtis, Inc.)
- Büttner Propeller, Gerald Büttner – Obernkirchen, Obernkirchen, Germany
- Burl's Aircraft, Chugiak, Alaska – United States, (1982–Present)
- Burnelli, Burnelli Aircraft Co. – United States
- Bushby, Bushby Aircraft Inc – United States
- Bushby, Bushby Aircraft Inc – United States
- Bussard, Bussard Design GmbH – Germany
- Bye Aerospace, Englewood, Colorado, United States