The Ace Junior Ace is a two-seat sports aircraft that has been offered by the Ace Aircraft Manufacturing Company in kit and plans form for home building since the early 1930s. It was designed by . It is a parasol wing monoplane of conventional taildragger configuration. Pilot and passenger sit side-by-side, in a cockpit that may be enclosed or left open. The fuselage is of fabric-covered tubular construction and the wings are wood. A variety of powerplants may be used, and the aircraft has a power range of 85 to 120 hp (63 to 89 kW).