The Macchi MB.308, later Aermacchi MB-308, is a light aircraft produced in Italy in the late 1940s.
It was a conventional high-wing cantilever monoplane with fixed tricycle undercarriage. Construction throughout was of wood. The pilot and a single passenger or instructor sat side by side, and later examples had a third seat behind them.
The MB.308 was ordered in quantity by the Italian Air Force, which leased them out to Italy's aeroclubs. A modified version with a higher-powered engine was put into production in Argentina, under licence to sailplane manufacturer German Bianco.