List of aircraft engine manufacturers (alphabetical) This is a list of aircraft engine manufacturers both past and present. The most important ones are listed in bold text. A ABC Motors - UK ADC - UK Aero Adventure Aviation - USA Aerojet - USA Aeronautical Development Agency - India Aeronca - USA Airdisco - UK Alfa Romeo - Italy Allison Engine Company - USA Alvis - UK Antoinette - France Argus - Germany Armstrong Siddeley - UK Aspin - UK Austro-Daimler - Austria Avia - Poland B Beardmore - UK Bentley - UK Benz - Germany BHP - UK Blackburn - UK BMW - Germany Bramo - Germany Bristol Engine Company - UK Bristol Siddeley - UK British Anzani Engine Company - UK Bücker - Germany Buick - USA C Carden - UK Centurion - Germany CFM International (United States and France) Chevrolet - USA Chrysler - USA Cirrus - UK Clerget - France Colombo - Italy 1 Commonwealth Aircraft Corporation - Australia Continental Motors - USA Coventry Climax - UK Coventry Victor - UK Curtiss-Wright - USA Curtiss - USA D Daimler-Benz - Germany de Havilland - UK Douglas - UK CitiGlobalConnection - India E Elizalde - Spain Engine Alliance - USA EADS (European) F Farman - France Fiat - Italy Ford - UK Ford - USA Franklin - USA G Garrett AiResearch - USA General Electric Aircraft Engines - USA GE Honda Aero Engines LLC - USA German Aircraft GmbH - Germany General Motors - USA Glushenkov - Russia/Soviet Union Gnome - France Gnome-Rhone - France Green - UK Guiberson - USA H Hall-Scott - USA Heinkel-Hirth - Germany Hindustan Aeronautics - India Hirth - Germany Hispano-Suiza - France Hispano-Suiza - Spain 2 Hitachi - Japan Honeywell - USA I IA - Argentina International Aero Engines (Multinational) Ishikawajima-Harima Heavy Industries - Japan Isotta-Fraschini - Italy Ivchenko - Russia/Soviet Union J Jacobs - USA Junkers - Germany Jabiru - Australia K Kawasaki Heavy Industries - Japan Kinner - USA Klimov - Russia/Soviet Union Klöckner-Humboldt-Deutz - Germany Kuznetsov - Russia/Soviet Union L Lawrance - USA Le Rhone - France Liberty - USA Limbach Flugmotoren - Germany Lorraine - France Lotarev - Russia/Soviet Union Avco Lycoming - USA Lyul'ka - Russia/Soviet Union M Maybach - Germany McCulloch - USA Mercedes - Germany Metropolitan-Vickers - UK Microturbo - Italy Mitsubishi - Japan Oberursel - Germany Motorlet - Czech Republic MTR (MTU/Turbomèca/Rolls-Royce) (European) MTU Aero Engines - Germany 3 N Nakajima - Japan Napier & Son - UK O Orenda - Japan P Packard - USA Piaggio - Italy Piaggio-Lycoming (United States and Italy) Pobjoy Airmotors - UK Power Jets - UK Praha-Jinonice - Czech Republic Praha-Liben - Czech Republic Pratt & Whitney Canada - Canada Pratt & Whitney - USA PZI - Poland PZL - Poland R Ranger - USA Reaction Motors - USA Renault - France Ricardo-Halford - UK Righter - USA Rolls-Royce North America - USA Rolls-Royce - UK S Saab - Sweden Salmson - France SCEMM - France Schmidding - Germany Scott - UK Shvetsov - Russia/Soviet Union Siddeley - UK Siemens AG - Germany Siemens-Halske - Germany Skoda Works - Czech Republic Snecma Moteurs - France Soloviev - Russia/Soviet Union SPA - Italy Studebaker - USA 4 Sunbeam - UK Svenska - Sweden T Thielert - Germany Tokyo Gasu Denki - Japan Train - France Tumanskii - Russia/Soviet Union Turbomèca - France Turbo-Union - Germany V 5 .