The Löhr Delta was a propeller-driven delta-wing monoplane, designed and built by Adolf Löhr of Pfarrwerfen, Austria.
Löhr's design was based on the work of Alexander Lippisch and aimed to be an aircraft which had a large wing area, take up minimal space in a hangar, and have good slow-speed flight characteristics.
A scale model produced in 1970 verified the qualities of Löhr's design, and led to the construction of a full-size aircraft. It was constructed from composites and aluminium. The centre section of the aircraft comprised a fully faired fuselage, with two occupants sitting side-by-side, a nose-mounted engine driving a tractor propeller, a central fin and rudder, and was supported by a fixed tricycle undercarriage. Control was by full-span elevons and rudder. The outer portions of the delta wing, trapezoidal in shape, could fold up to facilitate storage.
The Delta was not completed, and it did not fly. By 1990 the aircraft had been put on display at the Museum of Vehicles, Technology, and Aviation at Lauffen near Bad Ischl.