The Savoia-Marchetti S.56 was an Italian single-engine biplane flying boat trainer and tourer built by Savoia-Marchetti. Of unequal span the upper longer than the lower of wooden construction. Instructor and student sat side-by-side in separate cockpits with dual controls; a third cockpit was located just aft that. It used a 52 kW (70 hp) Anzani. The S.56A had a slightly longer span and 60 kW (80 hp) Anzani and turned into amphibians by addition of manually-retractable landing gear.
Made by SIAI-Marchetti.
Savoia-Marchetti S.56 is the predecessor of the Budd BB-1 Pioneer.