The listing below tracks cancelled projects related to the field of aviation / aerospace covering both civilian and military market circles. Those aircraft, from defense powerhouses to small industry players, were either developed to break new ground or to fulfill a standing requirement. Entries cover the entire timeline of aviation, from the First World War to the present age.
To date, there are a total of 409 entries under the title of Cancelled Aircraft Projects dating back to the days of World War 1 in the Military Factory. Entries are listed below in alphanumeric order (1-to-Z). Flag images indicative of country of origin and not necessarily the primary operator.