Bomber B was a German project dating to just before the start of World War II to develop a second-generation high-speed bomber that would replace all medium and heavy bombers then in service with the Luftwaffe.

The RLM sent out the specifications for Bomber B in July 1939. Bomber B called for a new medium with a maximum speed of 600 km/h (375 mph), able to carry a bomb load of 4000 kg (8,820 lb) to any part of Britain from bases in France or Norway. To improve crew performance and defensive firepower, the designs were to have a pressurized cabin with remote control armament. With the extended range, larger payload and better performance, the Bomber B design would replace all existing bombers in service.

Arado, Dornier, Focke-Wulf and Junkers all responded with designs. The Ar 340 was dropped in the design stage and Do 317 was put on low-priority development, while prototype orders were placed for the Fw 191 and Ju 288.