Twin Coach was an American vehicle manufacturing company from 1927 to 1955, based in Kent, Ohio, and a maker of marine engines and airplane parts until the 1960s. It was formed by brothers Frank and William Fageol when they left the Fageol Motor Company in 1927. They established the company in Kent to manufacture and sell buses with a new concept design. The body structure of this new bus was unique in that the body also became the frame and two engines – "twin" engines – were used to allow for larger passenger loads. This concept was patented by William B. Fageol.
Over the years, Twin Coach made transit buses, trolley buses, small delivery vehicles, Fageol six-cylinder gasoline/propane bus and marine engines, Fageol four-cylinder marine engines, and aircraft and truck components. The company was sometimes referred to as "Fageol-Twin Coach". The company was acquired by Flxible in 1955 and merged with it, but use of the "Twin Coach" name in marketing continued for a few years, and the name was briefly revived (as a brand name only) in the late 1960s by a related company called Highway Products, Inc.
Trolley bus production lasted from 1928 to 1951. Notably, the company's very first order and its very last were also its only export orders ever for trolley buses: eight vehicles for Manila, Philippines, in 1928 and four for Belo Horizonte, Brazil, in 1951. All other orders went to U.S. cities., none to Canadian cities.
In the 1930s and 1940s, Twin Coach was one of the largest producers in the very limited field of trolley bus manufacturing in North America. Until the late 1940s, only three other U.S. companies built more trolley buses: the Brill companies (J.G. Brill and successors ACF-Brill and CCF-Brill), Pullman and St. Louis Car Company. Another builder, Marmon-Herrington, only entered the field in 1946, but eventually surpassed Twin's total. All told, Twin Coach manufactured only 670 "trolley coaches" – as such vehicles were commonly called at the time – but sold them to 16 different cities (all in the U.S.), which equates to around one-third of all of the trolley bus systems ever to exist in the United States. Overall, the company's best customer for trolley coaches was the Seattle Transit System, which bought a total of 177, all between 1940 and 1943.