The Savoia-Marchetti SM.80 is a two-seat monoplane amphibian tourer, with a single, tractor engine mounted above the wing, designed in Italy in the early 1930s.

Like the fin and tailplane, the wing was a fabric covered wooden structure, but one subdivided into sealed cells to provide buoyancy in case of hull flooding.

All control surfaces, the differential ailerons, split elevators and rounded rudder, were steel tube framed and fabric covered.

On the water, lateral stability was provided by fixed, flat bottomed floats mounted on the wing at mid-span on pairs of parallel struts.

[4] The SM.80bis c/n 3 and registered as I-TATI before World War II and as I-ELIO afterwards was later on static public display at the Gianni Caproni Museum of Aeronautics[5] but has moved to Parco Museo del Volo Volandia at Vizzola Ticino.