The first bomber version of the Heinkel He 111 to enter production was the He 111A-0, with a pre-production batch of 10 aircraft being ordered for service evaluation late in 1935.
Prvou bombardovacou verziou Heinkelu He 111, ktorá sa dostala do výroby bol He 111A-0, z ktorej bolo 10 predsériových strojov dodaných na testovanie, na konci roka 1935.