This is a list of aircraft engine manufacturers both past and present.

• ABC Motors - UK
• ADC - UK
• Aero Adventure Aviation - USA
• Aerojet - USA
• 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
• Avco Lycoming - USA
• Beardmore - UK
• Bentley - UK
• Benz - Germany
• BHP - UK
• Blackburn - UK
• BMW - Germany
• Bramo - Germany
• Bristol Engine Company - UK
• Bristol Siddeley - UK
• Bücker - Germany
• Buick - USA
• Carden - UK
• Centurion - Germany
• CFM International - USA and France
• Chevrolet - USA
• Chrysler - USA
• Cirrus - UK
• Clerget - France
• Colombo - Italy
• Commonwealth Aircraft Corporation - Australia
• Continental Motors - USA
• Coventry Climax - UK
• Coventry Victor - UK
• Curtiss - USA
• Curtiss Wright - USA
• Daimler-Benz - Germany
• de Havilland - UK
• Douglas - UK
• EADS - Europe
• Elizalde - Spain
• Engine Alliance - USA
• Farman - France
• Fiat - Italy
• Ford - UK
• Ford - USA
• Franklin - USA
• Garrett AiResearch - USA
• General Electric Aircraft Engines - USA
• General Motors- USA
• GE Honda Aero Engines LLC - USA
• Glushenkov - Russia
• Gnome - Frane
• Gnome-Rhone - France
• Green - UK
• Guiberson - USA
• Hall-Scott - USA
• Heinkel-Hirth - Germany
• Hirth - Germany
• Hispano-Suiza - France
• Hispano-Suiza - Spain
• Hitachi - Japan
• Honeywell - USA
• IA - Argentinia
• International Aero Engines - International
• Ishikawajima-Harima Heavy Industries - Japan
• Isotta-Fraschini - Italy
• Ivchenko - Russia
• Jacobs - USA
• Junkers - Germany
• Kawasaki - Japan
• Kinner - USA
• Klimov - Russia
• Klöckner-Humboldt-Deutz - Germany
• Kuznetsov - Russia
• Lawrance - USA
• Le Rhone - France
• Liberty - USA
• Limbach Flugmotoren - Germany
• Lorraine - France
• Lotarev - Russia
• Lycoming - USA
• Lyul'ka - Russia
• Maybach - Germany
• McCulloch - USA
• Mercedes - Germany
• Metropolitan-Vickers - UK
• Microturbo - Italy
• Mitsubishi - Japan
• Motorlet - Czech
• MTR (MTU/Turbomèca/Rolls-Royce) - Europe
• MTU Aero Engines - German
• Nakajima - Japan
• Napier & Son - UK
• Oberursel - Germany
• Orenda - Canada
• Packard - USA
• Piaggio - Italy
• Piaggio-Lycoming - Italy and USA
• Pobjoy - UK
• Power Jets - UK
• Praha-Liben - Czech
• Praha-Jinonice - Czech
• Pratt & Whitney - USA
• Pratt & Whitney Canada - Canada
• PZI - Poland
• PZL - Poland
• Ranger - USA
• Reaction Motors - USA
• Renault - France
• Ricardo-Halford - UK
• Righter - USA
• Rolls-Royce - UK
• Rolls-Royce North America - USA
• Saab - Sweden
• Salmson - France
• SCEMM - France
• Schmidding - Germany
• Scott - UK
• Shvetsov - Russia
• Siddeley - UK
• Siemens - Germany
• Siemens-Halske - Germany
• Skoda - Czech
• Snecma Moteurs - France
• SNECMA - France
• SPA - Italy
• Studebaker - USA
• Sunbeam - UK
• Svenska - Sweden
• Tokyo Gasu Denki - Japan
• Turbomèca - France
• Train - France
• Turbo-Union - Germany
• Volvo Aero - Sweden
• Walter - Germany
• Warner - USA
• Westinghouse - USA
• Williams International - USA
• Winterthur - Switzerland
• Wolseley - UK
• Wright Company - USA