Engineers from Frankfurt

Kurt Heinrich Debus (November 29, 1908 – October 10, 1983) was a German V-2 rocket scientist and ex-SS member for Nazi Germany who, after being brought to the United States under Operation Paperclip, in 1962 became the first director of NASA's Launch Operations Center (later the Kennedy Space Center).

Wilhelm Emil "Willy" Messerschmitt (26 June 1898 – 15 September 1978) was a German aircraft designer and manufacturer. In 1934, in collaboration with Walter Rethel, he designed the Messerschmitt Bf 109, which became the most important fighter aircraft in the Luftwaffe as Germany rearmed prior to World War II. It remains the second most-produced warplane in history, with some 34,000 built, behind the Soviet Ilyushin Il-2. Another Messerschmitt aircraft, first called "Bf 109R", purpose-built for record setting, but later redesignated Messerschmitt Me 209, broke the absolute world airspeed record and held the world speed record for propeller-driven aircraft until 1969. Messerschmitt's firm also produced the first jet-powered fighter to enter service — the Messerschmitt Me 262.

Gerhard Waibel (born 3 October 1938) is a designer of gliders who worked for Alexander Schleicher GmbH & Co producing many famous designs.

Helmut Justus Karl Horn (June 24, 1912 - January 20, 1994) was a German-American engineer and applied physicist who was employed at the early Marshall Space Flight Center. Horn worked first at the Peenemünde Army Research Center and later, after the end of World War II, was hired by the U.S. through Operation Paperclip.

Johann Albert Eytelwein (31 December 1764 – 18 October 1849) was a German engineer who was among the first to examine mechanical problems dealing with friction, pulleys, and hydraulics.

Rainer Waser (born September 16, 1955, in Frankfurt) is a German professor of Electrical Engineering at RWTH Aachen University (Aachen). He is also director of the section Electronic Materials at the Peter Grünberg Institute which is located on the campus of Jülich Research Center (Forschungszentrum Jülich). His research and teaching is on solid-state chemistry and defect chemistry to electronic properties and modelling, the technology of new materials and the physical properties of construction components.

Wolf Lemke is a designer of gliders who worked for Rolladen Schneider and after it was taken over in 2003, for DG Flugzeugbau GmbH.