The Albatros L.66 was a simple, low powered, two seat sports and training parasol wing monoplane, built in Germany in the mid-1920s.

It was a cantilever parasol monoplane with an aerodynamically thick airfoil section wing, which had a simple, rectangular plan and significant dihedral.

[1] Traditionally, Albatros had constructed fuselages with wood frames, but the L.66 marked a departure, with a welded steel tube longeron and strut framework covered with fabric.

The nose-mounted engine, driving a two-blade propeller, was raised above the fuselage with a fairing behind it, enclosing the oil tank and with the instrument panel attached to its rear.

The conventional undercarriage was also very simple, with the mainwheels attached to a single axle which passed through the fuselage, sitting the L.66 close to the ground.