General Corradino D'Ascanio (February 1, 1891 in Popoli, Pescara – August 6, 1981 in Pisa) was an Italian aeronautical engineer. D'Ascanio designed the first production helicopter, for Agusta, and designed the first motor scooter for Ferdinando Innocenti. After the two fell out, D'Ascanio helped Enrico Piaggio produce the original Vespa.
D'Ascanio had an early passion for flight and design: by the age of fifteen, after studying flying techniques and the ratio between weight and wingspan of some birds, he built an experimental glider which he would launch from the hills near his home town.
After graduating in 1914 in mechanical engineering at the Politecnico di Torino, he enlisted in the voluntary division of the Italian Army entitled "weapon of Engineers, Division Battalion Aviatori" in Piedmont, where he was assigned the testing of airplane engines. Appointed sub-lieutenant on March 21, 1915, D'Ascanio was sent to France to choose a rotary engine to be produced in Italy for the Corpo Aeronautico Militare, returning with an agreement to produce the Gnome et Rhône designed Le Rhône.
After a brief pilot training course in Corsica on a Farman MF.7, he returned to engineering, designing a patented forward-facing monitoring device to improve maintenance monitoring within flight squadrons (estimated to have saved fifty lives), and took part in the trials of the first radio equipment installed in Italian aircraft.