Hexatron Engineering Co., Inc. is an American aerospace engineering, aircraft engine and aircraft parts manufacturer based in Salt Lake City, Utah. The company was founded in 1982 by Cy Williams and specializes in the design and manufacture of airline aircraft crew seats and also has an aircraft engine design in production for homebuilt, ultralight aircraft and the American light-sport aircraft categories. In 1995 the company decided to develop a line of aircraft engines and designed the Hexadyne P60, a two-cylinder, horizontally-opposed four-stroke powerplant which remains in production.