The Simonini Victor 2 Super is an Italian aircraft engine, designed and produced by Simonini Racing of San Dalmazio di Serramazzoni for use in ultralight aircraft.

The Simonini Victor 2 Plus is an Italian aircraft engine, designed and produced by Simonini Racing of San Dalmazio di Serramazzoni for use in ultralight aircraft.

The Sodemo V2-1.2 is a French aircraft engine, designed and produced by Sodemo of Magny-Cours, for use in light aircraft.

The AeroTwin AT972T is an American aircraft engine, designed and produced by the AeroTwin Motors Corporation, a subsidiary of the AirScooter Corporation of Henderson, Nevada for use in ultralight aircraft, in particular their AirScooter helicopter design.

The AICTA LMD 416-00R is a Czech aircraft engine, that was designed and produced by AICTA Design Work of Prague for use in light aircraft.

The Airtrike 850ti is a German aircraft engine, that was designed and produced by Airtrike of Berlin for use in ultralight aircraft and in particular their Airtrike Eagle 5 design.

The Briggs & Stratton Vanguard Big Block V-Twin is a series of American piston engines, designed and produced by Briggs & Stratton of Wauwatosa, Wisconsin for use in commercial applications. They have also been adapted for use as ultralight aircraft engines.

The Diesel Air Dair 100 is an opposed-piston diesel aircraft engine, designed and produced by Diesel Air Ltd of Olney, Buckinghamshire for use in airships, home-built kitplanes and light aircraft. The prototype was built in the 1990s and exhibited it at PFA airshows. Although Diesel Air engines have been fitted to an AT-10 airship and to a Luscombe 8A monoplane, production numbers have been very limited.

The JLT Motors Ecoyota is a series of French aircraft engines, designed and produced by JLT Motors of Boos, Seine-Maritime for use in ultralight aircraft.

The Hirth F-40 is a German aircraft engine, that was designed and produced by Hirth of Benningen for use in ultralight aircraft.

The Lanitz 3W 342 iB2 TS is a German aircraft engine, designed and produced by Lanitz Aviation of Leipzig for use in ultralight aircraft.

The Loravia LOR 75 is a French aircraft engine, designed and produced by Loravia of Yutz for use in ultralight aircraft. It was introduced in 2009.

The LSA-Engines LSA850 is a family of German aircraft engines, produced by LSA-Engines of Berlin for use in light-sport aircraft.

The Marcmotor ROS200 is an Italian aircraft engine, designed and produced by Marcmotor of Macerata for use in ultralight aircraft.

The NST BS 650 is a German aircraft engine that was designed and produced by NST-Machinenbau of Niedergörsdorf for use in ultralight aircraft.

The Raven 1600 SV is an American aircraft engine, designed and produced by Raven Redrives of El Prado, New Mexico for use in ultralight and homebuilt aircraft.

The Solo 2625 is a series of German aircraft engines, designed and produced by Solo Vertriebs- und Entwicklungs GmbH of Fellbach for use in ultralight aircraft, self-launching sailplanes and homebuilt aircraft.

The Vaxell 80i is a Polish aircraft engine, designed and produced by Vaxell of Bydgoszcz for use in ultralight and homebuilt aircraft.

The Wankel AG LCR - 814 TGti is a German Wankel aircraft engine, designed and produced by Wankel AG of Kirchberg, Saxony for use in ultralight aircraft.