Duigan biplane
# Duigan biplane

Duigan biplane may refer to a number of different, otherwise unnamed aircraft designed and/or built by John Duigan:

* the Duigan pusher biplane, the first Australian powered aircraft
* the Avro Duigan, built by Avro in the UK to a design by Duigan
* the Duigan tractor biplane, Duigan's final design
