The Antoinette III, originally called the Ferber IX or Aeroplane Ferber n° 9, was an early experimental aircraft flown in France. It was based on Ferdinand Ferber's previous design the Ferber n°8, and was quite unlike other Antoinette aircraft. It was renamed when Ferber became a director of the Antoinette company. Between July and September 1908, Ferber made a series of progressively longer flights in the machine, the longest recorded being on 15 September when he covered 9.65 km (6.00 mi) in 9 minutes.