Avorio-Prassone kite balloon (in French Avorio-Prassone Captif) was a type of non-rigid military observation balloon, designed in 1915 by Luigi Avorio and Eugenio Prassone.

Project of Italian kite balloon type was assigned to Major Luigi Avorio, Chief of the Aeronautical Division of the Italian Army, and Dr. Eugenio Prassone, director of the Stabilimento costruzioni aeronautiche militari aircraft factory in Rome.

By its design the type followed the shapes of French Caquot kite balloon[2] being more spherical, although it was still able to generate some aerodynamic lift and like the Caquot, had three fins for stability balance.

On 12 August 1918 Avoria and Prassone received an U. S. patent for their balloon unit.

[4] In the same month the U. S. Navy brought two of the units and put them under the tests in the military balloon school in Fort Omaha, Nebraska.