The field of aviation is littered with failed and abandoned projects attempting to forge new paths or fulfill standing requirements.
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 136 in the Cancelled Aircraft Projects - Not Making the Cut of 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.