The Monocoupe 90 was a two-seat, light cabin airplane built by Donald A. Luscombe for Monocoupe Aircraft. The first Monocoupe was built in an abandoned church in Davenport, Iowa, and first flew on April 1, 1927. Various models were in production until the late 1940s.

Monocoupe Aircraft was a manufacturer of light airplanes originally produced in the late 1920s and 30s. They introduced relatively inexpensive, compact, and sporty aircraft in an era of large, maintenance intensive, open-cockpit biplanes, and the Monocoupe series was one of the first economical, closed-cabin, two-seat, light aircraft in the United States. As a result, the Monocoupe soon became a successful brand.