The Hurel-Dubois HD.10 was a French research aircraft first flown in 1948 to investigate Maurice Hurel's ideas about high aspect ratio wings.

It was a single-seat monoplane with a retractable tricycle undercarriage and twin tails, featuring a very high aspect-ratio wing of 32.5:1.

[1] To demonstrate the practicality of these ideas, Hurel designed a single-engined prototype, the HD.10, with construction entrusted to the Établissements Pierre Levasseur.

[2] The HD.10 was a high-winged tractor configuration monoplane with the metal wing braced by single lift struts to the fuselage.

The fuselage was of fabric-covered steel tube construction with the pilot sitting in an enclosed cockpit under the trailing edge of the wing.