The Backcountry Super Cubs Mackey SQ2 is an American STOL amateur-built aircraft, designed and produced by Backcountry Super Cubs of Douglas, Wyoming.

The aircraft is based upon the design of the Piper PA-18 Super Cub and is supplied as a kit for amateur construction.

[1] The Mackey SQ2 features a strut-braced high-wing, a two-seats-in-tandem enclosed cockpit that is 30 in (76 cm) wide, fixed conventional landing gear and a single engine in tractor configuration.

The aircraft's recommended engine power range is 180 to 240 hp (134 to 179 kW) and standard engines used include the 180 hp (134 kW) Lycoming O-360 four-stroke powerplant.

The aircraft can be fitted with tundra tires for operations on soft or rough surfaces.