The Martin M-1 was an American gull winged, single-seat glider that was designed and built by Volmer Jensen in 1939.

[1][2] Jim Martin contracted Jensen to design and built him a glider for contest flying just before the Second World War.

[1][2] Martin flew the aircraft in a number of US Nationals, as did a later owner of the M-1, Emil Lehecka.

By the 1970s the aircraft was owned by Francis Kalinowsky and was based at the Circle X airport in Florida.

[1] The aircraft was removed from the Federal Aviation Administration registry and its whereabouts are unknown.