Messerschmitt-Bölkow-Blohm (MBB) was a West German aerospace manufacturer. It was formed during the late 1960s as the result of efforts to consolidate the West German aerospace industry; aircraft manufacturer Messerschmitt AG merged with the civil engineering and aviation firm Bölkow in 1968, while rival aircraft manufacturer Hamburger Flugzeugbau was acquired by the company in the following year.

Hamburger Flugzeugbau (HFB) was an aircraft manufacturer, located primarily in the Finkenwerder quarter of Hamburg, Germany. Established in 1933 as an offshoot of Blohm & Voss shipbuilders, it later became an operating division within its parent company and was known as Abteilung Flugzeugbau der Schiffswerft Blohm & Voss from 1937 until it ceased operation at the end of World War II. In the postwar period it was revived as an independent company under its original name and subsequently joined several consortia before being merged to form Messerschmitt-Bölkow-Blohm (MBB). It participates in the present day Airbus and European aerospace programs.