The Monopole motorcycle brand, produced in England from about 1919 to 1928, was a small British manufacturer known for lightweight and affordable motorbikes designed for everyday use. Built by Martin & Co in Birmingham, Monopole machines typically used reliable engines from established suppliers such as Villiers and Precision, paired with straightforward frames and components that emphasized simplicity and economy. Though never a large producer, Monopole earned a modest reputation among riders seeking practical transport in the post-World War I era, securing the marque a place in the early history of British motorcycling.