The Fiat BRG was an Italian heavy bomber prototype built in the 1930s by Fiat for the Italian Air Force.
The BRG (Bombardiere Rosatelli Gigante, "Giant Rosatelli Bomber") was a three-engine strut-braced high-wing monoplane. It had a deep slab-sided fuselage with one engine in the nose and two strut-mounted engines between the upper wing and a short stub wing attached to the lower fuselage. The BRG had a single fin and rudder and a wide-track landing gear. The pilot and co-pilot had a cabin forward of the wing leading edge. The aircraft was fitted with four machine guns, located in an open dorsal cockpit and a ventral tunnel. After testing in 1931 the prototype BRG was attached to 62 Squadriglia SPB, an experimental heavy bomber squadron.