Ar 65a Prototype, powered by a 559 kW (750 hp) BMW VI 7.3 12-cylinder water-cooled engine. First flight in 1931.
Ar 65b Prototype, similar to the 65a but with minor structural changes.
Ar 65c Prototype, similar to the 65b but with minor structural changes.
Ar 65d Production model.
Ar 65E Similar to the 65d, but with the removal of the vertical fuselage magazine of six 10 kg (22 lb) bombs.
Ar 65F Final production model. Similar to the 65E.
- Bulgaria Bulgarian Air Force
- Germany Luftwaffe