Rotary engine (disambiguation)

Rotary engine can have several meanings:
* For the rotating piston engine used in some World War I aircraft, see rotary engine.:* For the similar design where the crankshaft rotates (instead of the engine), see radial engine
* For the pistonless internal combustion engine used in NSU and some Mazda cars, see Wankel engine.
* For other proposed pistonless internal combustion engines, see pistonless rotary engine.
* For rotary engines that extract energy from a fluid flow, see turbine.