The Savoia-Marchetti SM.88, was an Italian twin-engined heavy fighter prototype of World War II, featuring a twin-boom structure, powered by German Daimler-Benz engines. The SM.88, intended for export, was a light-medium, land based, multi-role fighter regarded as an advanced combat aircraft at the time of its debut in 1939. Though Savoia had already developed a similar twin boom aircraft, (the S.55) the layout was regarded as a new concept for Italian aircraft industries.