The Robinson R66 is a helicopter designed and built by Robinson Helicopter Company. It has five seats, a separate cargo compartment and is powered by a Rolls-Royce RR300 turboshaft engine. The R66 is slightly faster and smoother than the piston-powered Robinson R44 from which it is derived. The R66 received both type and production certificates from the U.S. Federal Aviation Administration (FAA) on October 25, 2010. The R66 is a larger and turbine powered derivative of the Robinson R22 and R44 family of helicopters.

The Robinson Helicopter Company, based at Zamperini Field in Torrance, California, is an American helicopter manufacturer. As of 2024, Robinson produces three models: the two-seat R22, the four-seat R44, both of which use Lycoming piston engines, and the five-seat R66, which use Rolls-Royce turbine engines.