The InterPlane Starboy was a proposed Czech homebuilt aircraft designed by InterPlane Aircraft of Zbraslavice. The aircraft was intended to be supplied as a complete ready-to-fly-aircraft or as a kit for amateur construction, but it has seemingly never entered production.
The Starboy design featured a cantilever low-wing, a two-seats-in-side-by-side configuration enclosed cockpit under a bubble canopy, fixed tricycle landing gear with wheel pants and a single engine in tractor configuration.
The aircraft was to have been constructed of a combination of aluminum and composite materials. Its span wing would have had a wing area of . The standard engine proposed was the Rotax 912UL.
The aircraft was to have a typical empty weight of and a gross weight of , giving a useful load of . With full fuel of the payload for pilot, passenger and baggage would have been .
The manufacturer estimated the construction time from the planned kit as 500 hours.