The Cotton motorcycle brand, produced in England from 1918 to 1980, was a British manufacturer known for its distinctive triangulated frame design and strong competition pedigree. Founded by Frank Willoughby Cotton, the company gained early recognition for its patented frame, which provided improved rigidity and handling. Cotton motorcycles used engines from suppliers such as JAP, Blackburne, and later Villiers, producing a wide range of lightweight and sporting machines. The marque achieved notable success in events like the Isle of Man TT, and its motorcycles were characterized by innovative engineering, agility, and racing performance, securing Cotton a respected place in British motorcycling history.