Messerschmitt Me 209
 Messerschmitt's designation Me 209 was used for two different projects during the late 1930s and early 1940s. The first was a record-setting single-engine racing aircraft for which little or no consideration was given to adaptation for combat. The second Me 209 was a proposal for a new development from the lineage that produced the highly successful Bf 109 that served as the Luftwaffe's primary fighter throughout World War II.