
The Breda A.3 was a prototype twin-engined biplane, designed by Società Italiana Ernesto Breda, as a night bomber in 1924.

The Breda A.8 was a prototype twin-engined biplane, designed by Società Italiana Ernesto Breda, as a night bomber in 1927.

The Breda A.14 was a prototype three-engined biplane, designed by Società Italiana Ernesto Breda as a night bomber in 1928. The aircraft was proposed to the Regia Aeronautica, but failed assessments, and was abandoned. The aircraft was designed to solve the flight problems experienced on the A.8. The A.14 was tested in 1928, powered by three 340 kW (450 hp) Alfa Romeo Jupiter engines. Although performance was improved, the Regia Aeronautica decided not to accept the A.14. To make up for the costs, it was suggested that a demilitarised version be sold to civilians, but a lack of civilian interest resulted in the abandonment of the project.

The Breda CC.20 was an Italian heavy bomber prototype of 1929 designed and built by the Breda company.

The Caproni Ca.73 was an Italian airliner produced during the 1920s which went on to serve as a light bomber in the newly independent Regia Aeronautica. It was an inverted sesquiplane with a biplane tail and two engines mounted in a push-pull configuration within a common nacelle mounted on struts in the interplane gap above the fuselage. The two pilots sat in an open cockpit, while ten passengers could be accommodated within the fuselage.

The Caproni Ca.87 was an Italian flying boat built in the 1920s for a planned transatlantic flight.

The Caproni Ca.90 was a prototype Italian heavy bomber designed and built by Caproni. When it first flew in 1929 it was the largest aircraft in the world.

The Caproni Ca.97 was a civil utility aircraft produced in Italy in the late 1920s and early 1930s. As originally designed, it was a high-wing braced trimotor monoplane of conventional configuration with one engine mounted on the nose and the other two carried on strut-mounted nacelles at the fuselage sides. Examples were also produced with only the nose engine or only the two nacelle-mounted engines.

The Caproni Ca.101 was a three-engine Italian airliner which later saw military use as a transport and bomber. It was designed in 1927 and first flown in 1928.

The Macchi M.18 was a flying boat produced in Italy in the early 1920s. Originally planned as a passenger aircraft, it entered production as a bomber before eventually being offered on the civil market that it was originally intended for.

The Macchi M.24 was a flying boat produced in Italy during the 1920s. Originally intended as a bomber, it was eventually produced for civilian use as well.

The Piaggio P.3 was an Italian night bomber prototype built by Piaggio in 1923.