The North American Rotorwerks Pitbull II is an American autogyro, designed and produced by North American Rotorwerks of Tukwila, Washington. When it was available the aircraft was supplied as a kit for amateur construction, but by 2013 production had been suspended.
The Pitbull II is a two-seat development of the North American Rotorwerks Pitbull Ultralight. It was designed to comply with the US Experimental - Amateur-built rules. It features a single main rotor, a two-seats in side-by-side configuration open cockpit with a windshield, conventional landing gear and a four-cylinder, air and liquid-cooled, four-stroke, dual-ignition Rotax 912S engine in tractor configuration. The Subaru EA-81 and Subaru EA-82 auto-conversion powerplants are optional.
The aircraft's rotor has a diameter and the cockpit has a width. The tailplane is strut-braced and an electric pre-rotator is standard. A small baggage compartment with a capacity of and a volume of is fitted. The recommended power range is . With its empty weight of and a gross weight of , the useful load is . Construction time from the factory assembly kit is estimated at 100 hours.
The aircraft is intended to resemble the autogyros of the 1930s and as such it uses a radial engine-style round cowling, rounded rudder, barrel-shaped fuselage and other antique styling details.