Ernest Archdeacon (23 March 1863 – 3 January 1950) was a French lawyer and aviation pioneer before the First World War. He made his first balloon flight at the age of 20. He commissioned a copy of the 1902 Wright No. 3 glider but had only limited success. He was regarded as France's foremost promoter and sponsor of aviation, offering prizes (Coupe d'Aviation Ernest Archdeacon and the Deutsch de la Meurthe-Archdeacon prize), commissioning designs, and organising tests and events.